Future breaking changes

[vaind]

Description

I figured it would be nice to have a list what breaking changes are planned for a future major release:

• Enable privacy masking for screenshots by default. Privacy masking was introduced to screenshots in redact screenshots via view hierarchy #2361 and for backward compatibility, it's only enabled when you touch the "options.experimental.privacy" setting.
• Remove deprecated SentryFluterOptions.Screenshot*
• Remove screenshot option bool attachOnlyWhenResumed = false; when it's no longer necessary, see https://docs.sentry.io/platforms/flutter/troubleshooting/#screenshot-integration-background-crash
• Don't attach response body to event automatically if maxResponseBodySize is set. currently happens in dio integration
• Remove SentryDisplayWidget and manual ttid implementation, see here
• Drift min version update
  
• Bump Dart and Flutter version, tbd which version

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Feel free to update this list directly

[buenaflor]

If needed we can also currently push things to the v9 branch

[vaind]

If needed we can also currently push things to the v9 branch

some of these would just cause merge conflicts down the road so I'd suggest doing them later closer to the release.