android edge to edge fix

[n13]

PR Summary

This PR fixes Android edge-to-edge and lint issues for release builds.
It removes deprecated Flutter system bar color calls, keeps edge-to-edge enabled, and updates Android theme/resource config to satisfy lintRelease without changing cross-platform build portability.

Included changes

• Removed explicit SystemUiOverlayStyle status/navigation bar color settings in mobile-app/lib/main.dart.
• Added optional camera hardware declaration (required=false) in mobile-app/android/app/src/main/AndroidManifest.xml to resolve ChromeOS-related lint error.
• Updated launch themes in:
  • mobile-app/android/app/src/main/res/values/styles.xml
  • mobile-app/android/app/src/main/res/values-night/styles.xml
    using tools:targetApi on API-gated attributes (forceDarkAllowed, windowLayoutInDisplayCutoutMode) so behavior is preserved and lint passes.
• Removed machine-specific Gradle JDK pin from mobile-app/android/gradle.properties to avoid environment-specific breakage.

Verification

• :app:lintRelease passes when run with JDK 21.

[n13]

the build works on Android, I don't know if it will get rid of the warnings...

[dewabisma]

Looking fine if it works. But a little disturbed by the different targetApi. We defined 27 and 29. Shouldn’t we stick to one?

[n13]

These settings apply to different targets - AI thinks this will kill the warnings. but we will only see this once we upload. If this doesn't work I will manually fix it ;)

[dewabisma]

All right, let's do this!