Internal: b/238459207

Internal issue: b/171575646

Android 12 appears to have a new (?) "Bold Text" accessibility setting under "Settings > Accessibility > Text and display", which is currently not respected in Flutter. When it is turned on, the Android embedder needs to set AccessbilityFeatures.boldText [1] to true to communicate this setting to the framework. The framework already properly supports bold text because it has been an option on iOS for a long time (for context, support for iOS was added to Flutter in flutter/engine#6072).

I believe this setting is new with Android 12, I was not able to find it on Android 11. Confirmed, that this is Android 12+ only.

[1] https://master-api.flutter.dev/flutter/dart-ui/AccessibilityFeatures/boldText.html