Issue number: resolves #29773

---------

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issue. -->

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etc). Submit multiple pull requests if needed. -->

## What is the current behavior?
<!-- Please describe the current behavior that you are modifying. -->

Certain Chrome and Edge versions (confirmed: Chrome v127 and Edge v127)
would indicate that the backdrop has an accessibility violation:

```
Blocked aria-hidden on a <ion-backdrop> element because the element that just received
focus must not be hidden from assistive technology users. Avoid using aria-hidden on a
focused element or its ancestor. Consider using the inert attribute instead, which will also
prevent focus. For more details, see the aria-hidden section of the WAI-ARIA specification at
```

The error is happening because `tabindex` and `aria-hidden` are being
passed to `ion-backdrop`. The `tabindex` attribute is used to make an
element focusable, regardless of value. When `aria-hidden` is applied to
an element, then the element is hidden from screen readers. This
violates the accessibility standards since `ion-backdrop` would be
considered a focusable element but not visible to screen readers.

## What is the new behavior?
<!-- Please describe the behavior or changes that are being added by
this PR. -->

- Removed `tabindex`, this aligns with frameworks known for
accessibility (Chakra UI)

## Does this introduce a breaking change?

- [ ] Yes
- [x] No

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1. Describe the impact and migration path for existing applications
below.
  2. Update the BREAKING.md file with the breaking change.
3. Add "BREAKING CHANGE: [...]" to the commit description when merging.
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for more information.
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## Other information

<!-- Any other information that is important to this PR such as
screenshots of how the component looks before and after the change. -->

Dev build: `8.3.4-dev.11729533091.1ac77a0c`

How to test:

1. Use either Chrome v127 or Edge v127
2. Navigate to the [alert basic
page](https://ionic-framework-3pvgcj4b9-ionic1.vercel.app/src/components/alert/test/basic)
from the `main` branch
3. Open browser console
4. Click on the first button on the alert page
5. Click on the backdrop
6. Notice the error message in the browser console (if you don't see it,
then use a private browser or clear cache)
7. Navigate to the [alert basic
page](https://ionic-framework-git-rou-11175-ionic1.vercel.app/src/components/alert/test/basic)
from the `ROU-11175` branch
8. Repeat steps 2-6
9. Verify that the error does not appear

…-group (#29870)

Issue number: resolves #29826

---------

## What is the current behavior?

When using `compareWith` on `ion-radio-group` in Ionic Angular
Standalone the following error is thrown:

```
NG8002: Can't bind to 'compareWith' since it isn't a known property of 'ion-radio-group'.
```

## What is the new behavior?

- `compareWith` on `ion-radio-group` in Angular Standalone is available

## Does this introduce a breaking change?

- [ ] Yes
- [x] No

resolves #28201

This PR fixes the navigation issue related to `router.go` that was
identified in issue #28201. After working on this issue I realised that
@xxllxhdj has already created a PR for this in #29847. While their fix
is great, I have added tests to replicate the issue, reused existing
code and `undefined` will be returned in unexpected situations - which
matches the existing functionality.

## What is the current behavior?

If a user navigates from `/home` -> `/pageA` -> `/pageB` -> `/pageC` ->
back to `/pageB` -> then `router.go(-2)` is called the URL will be
updated to `/home` correctly, but the app will try to render `/pageA`.

This happens for any delta < -1.

## What is the new behavior?

The app will correctly render `/pageA`, which matches the URL.

## Does this introduce a breaking change?

- [ ] Yes
- [X] No

---------

Co-authored-by: xxllxhdj <[email protected]>

Issue number: resolves #29857 

---------

<!-- Please do not submit updates to dependencies unless it fixes an
issue. -->

<!-- Please try to limit your pull request to one type (bugfix, feature,
etc). Submit multiple pull requests if needed. -->

## What is the current behavior?
<!-- Please describe the current behavior that you are modifying. -->

Screen readers like Android Talkback would not have the focus ring on
the correct element. For example, Talkback would announce the buttons
correctly within action sheet but the focus ring was no where to be
seen.

After digging around, the focus rings are located out of screen because
the action sheet is mounted to the DOM out of the screen first then
transitions into the screen. There are some screen readers that do not
behave as expected when an element uses `transform` styles like action
sheet.


https://github.com/user-attachments/assets/5a700bcc-3149-47a9-96ff-0aef99dd2bb3

## What is the new behavior?
<!-- Please describe the behavior or changes that are being added by
this PR. -->

- When an overlay is being animated (presenting or dismissing), the
overlay will hide from screen readers. This allows the element to
navigate to its correct destination for screen readers to interact with.
Plus, we shouldn't allow screen readers to interact with content in the
middle of an animation. It could lead to some confusion.

## Does this introduce a breaking change?

- [ ] Yes
- [x] No

<!--
  If this introduces a breaking change:
1. Describe the impact and migration path for existing applications
below.
  2. Update the BREAKING.md file with the breaking change.
3. Add "BREAKING CHANGE: [...]" to the commit description when merging.
See
https://github.com/ionic-team/ionic-framework/blob/main/docs/CONTRIBUTING.md#footer
for more information.
-->


## Other information

<!-- Any other information that is important to this PR such as
screenshots of how the component looks before and after the change. -->

Dev build: 8.3.3-dev.11729276019.194c165c

**A physical Android device will be needed, the issue does not appear in
simulators**

Components that need to be tested because they use overlays:
- Action sheet
- Alert
- Loading
- Modal
- Popover
- Select w/ action sheet interface
- Select w/ alert interface
- Select w/ popover interface
- Toast

How to test:
1. Create a starter app (any framework will do)
2. Add an action sheet
3. Build app for mobile devices
```
ionic build

ionic cap add ios
ionic cap add android

ionic cap copy && ionic cap sync
```
4. Open the app in Android Studio: `ionic cap open android`
5. Connect the Android device to Android Studio
6. Open app in Android device
7. Launch Talkback
8. Navigate back to the app
9. Open action sheet 
10. Swipe over to the action sheet's buttons
11. Notice that the buttons don't have a focus ring
12. Go back to the starter
4. Install the dev build
5. Add the components to the app
6. Sync app: `ionic cap copy && ionic cap sync`
13. Relaunch the app on the Android device
14. Verify that the focus ring appears on the action sheet's buttons
15. Verify that the other overlays are working as intended

Issue number: stemmed from #29773

---------

<!-- Please do not submit updates to dependencies unless it fixes an
issue. -->

<!-- Please try to limit your pull request to one type (bugfix, feature,
etc). Submit multiple pull requests if needed. -->

## What is the current behavior?
<!-- Please describe the current behavior that you are modifying. -->

Certain Chrome and Edge versions (confirmed: Chrome v127, v128, v129 and
Edge v127) would indicate that certain elements have an accessibility
violation:

```
Blocked aria-hidden on a "ELEMENT NAME" element because the element that just received
focus must not be hidden from assistive technology users. Avoid using aria-hidden on a
focused element or its ancestor. Consider using the inert attribute instead, which will also
prevent focus. For more details, see the aria-hidden section of the WAI-ARIA specification at
```

This issue happens when a toast appears and the users clicks on any
element that is not related to toast. This is due to the main content
having an `aria-hidden` so users should not to be able to interact with
any of those elements. This isn't an issue when an overlay uses a
backdrop, like `ion-alert` because the backdrop prevents a user from
interacting with those elements.

## What is the new behavior?
<!-- Please describe the behavior or changes that are being added by
this PR. -->

- When toast is present, the main content no longer has an
`aria-hidden`. This aligns with accessibility guidelines. I also
verified with other Framework, MD states "Don't trap focus in the
snackbar. Users should be able to freely navigate in and out."

## Does this introduce a breaking change?

- [ ] Yes
- [x] No

<!--
  If this introduces a breaking change:
1. Describe the impact and migration path for existing applications
below.
  2. Update the BREAKING.md file with the breaking change.
3. Add "BREAKING CHANGE: [...]" to the commit description when merging.
See
https://github.com/ionic-team/ionic-framework/blob/main/docs/CONTRIBUTING.md#footer
for more information.
-->


## Other information

<!-- Any other information that is important to this PR such as
screenshots of how the component looks before and after the change. -->

Dev build: `8.3.4-dev.11729879684.1ea28919`

1. Clone this
[repo](https://github.com/brandyscarney/test-angular-overlays)
2. Install deps
3. Run the app on a private browser (Chrome v127, v128, v129 or Edge
v127)
4. Open browser console
5. Click on "Open Toast" button
6. Click on any element other than "Open Toast" button, like "Open
Popover"
7. Notice the error message
8. Close private browser
9. Install dev build: `npm install
@ionic/[email protected]`
10. Repeat steps 4-7
11. Verify that the error message doesn't occur

… text when focused (#29958)

Issue number: internal

---------

<!-- Please do not submit updates to dependencies unless it fixes an
issue. -->

<!-- Please try to limit your pull request to one type (bugfix, feature,
etc). Submit multiple pull requests if needed. -->

## What is the current behavior?
<!-- Please describe the current behavior that you are modifying. -->

Screen readers do not announce helper and error text when user is
focused on the input or textarea. This does not align with the
accessibility guidelines.

## What is the new behavior?
<!-- Please describe the behavior or changes that are being added by
this PR. -->

- The appropriate `aria` tags are added to the native input and textarea
in order to associate them to the helper and error texts.
- `aria-describedBy` will only be added to the native element based on
helper or error text. If helper text exists then the helper text ID will
be used. If the error text exists and the component has the `ion-touched
ion-invalid` classes, then the error text ID will be used.
- `aria-invalid` will only be added if the error text exists and the
component has the `ion-touched ion-invalid` classes.
- Added tests.

## Does this introduce a breaking change?

- [ ] Yes
- [x] No

<!--
  If this introduces a breaking change:
1. Describe the impact and migration path for existing applications
below.
  2. Update the BREAKING.md file with the breaking change.
3. Add "BREAKING CHANGE: [...]" to the commit description when merging.
See
https://github.com/ionic-team/ionic-framework/blob/main/docs/CONTRIBUTING.md#footer
for more information.
-->


## Other information

<!-- Any other information that is important to this PR such as
screenshots of how the component looks before and after the change. -->

How to test:
1. Navigate to the [input
page](https://ionic-framework-lio43tje7-ionic1.vercel.app/src/components/input/test/bottom-content)
on the `main` branch
2. Turn on the screen reader of your choice
3. Notice that the screen reader does not announce the helper or error
text when the input is focused
4. Navigate to the [input
page](https://ionic-framework-git-rou-11274-ionic1.vercel.app/src/components/input/test/bottom-content)
on the `ROU-11274` branch
5. Turn on the screen reader of your choice
6. Verify that the screen reader announces the helper or error text when
the input is focused on
7. Navigate to the [textarea
page](https://ionic-framework-lio43tje7-ionic1.vercel.app/src/components/textarea/test/bottom-content)
on the `main` branch
8. Repeat steps 2-3
9. Navigate to the [textarea
page](https://ionic-framework-git-rou-11274-ionic1.vercel.app/src/components/textarea/test/bottom-content)
on the `ROU-11274` branch
10. Repeat steps 5-6

Known Webkit issues:
This fix will not work on macOS
[16](https://bugs.webkit.org/show_bug.cgi?id=254081) and
[17](https://bugs.webkit.org/show_bug.cgi?id=262895) as VoiceOver will
not read any text using `aria-describedby`. Works fine on macOS 18.

Issue number: resolves #29858

---------

## What is the current behavior?
When swiping between elements using Android TalkBack, a green box is
shown for certain overlays and it gains focus at the beginning and end
of those overlays:

<img width="419" alt="Screenshot 2024-10-25 at 2 44 45 PM"
src="https://github.com/user-attachments/assets/dffd8126-ec1d-4b6f-87fc-6488c7c09aab">

## What is the new behavior?
The `aria-hidden` attribute is now added to the focus trap divs to hide
them from screen readers, without preventing these divs from trapping
keyboard focus.

## Does this introduce a breaking change?

- [ ] Yes
- [x] No

## Other information
Dev build: `8.3.4-dev.11729882231.1b2e7f13`

v8.3.4