42708 Test the Android embedding v2

43221 Migrate examples to the Android embedding v2

9895 Android Embedding PR37: Separated FlutterActivity and FlutterFragment via FlutterActivityAndFragmentDelegate

11890 Add some AppLifecycleTests

12128 Make iOS FlutterViewController stop sending inactive/pause on app lifecycle events when not visible

12232 FlutterViewController notify will dealloc

13280 Android embedding API updates for plugin ecosystem

13349 Deprecated DartExecutor as BinaryMessenger and added a getBinaryMessenger() method. (#43202)

13432 Release shim bindings when detaching

2232 [multiple] V2 embedding plugins use compileOnly