Show large content viewer instead of scaling pill buttons in large text mode

[laminesm]

Platforms Impacted

• iOS
• visionOS
• macOS

Description of changes

Currently, PillButtonBar is broken on large text mode and should be relying on its UILargeContentViewerInteraction instead. This change changes the font of the PillButton to not scale with size category changes and use a UILargeContentViewerInteraction.

Binary change

(how is our binary size impacted -- see https://github.com/microsoft/fluentui-apple/wiki/Size-Comparison)

Verification

Pill buttons no longer scale and show a large content viewer instead.

Visual Verification

Before	After

Pull request checklist

This PR has considered:

• Light and Dark appearances
• iOS supported versions (all major versions greater than or equal current target deployment version)
• VoiceOver and Keyboard Accessibility
• Internationalization and Right to Left layouts
• Different resolutions (1x, 2x, 3x)
• Size classes and window sizes (iPhone vs iPad, notched devices, multitasking, different window sizes, etc)
• iPad Pointer interaction
• SwiftUI consumption (validation or new demo scenarios needed)
• Objective-C exposure (provide it only if needed)

Microsoft Reviewers: Open in CodeFlow