4576 [webview_flutter] Default Android to hybrid composition (cla: yes, p: webview_flutter)

4577 [flutter_plugin_tools] Improve package targeting (cla: yes)

4580 Remove deprecated plugins (cla: yes, p: battery, p: android_alarm_manager, p: android_intent, p: image_picker, p: share, p: video_player, p: package_info, p: wifi_info_flutter, p: sensors, p: connectivity, p: device_info, platform-ios, platform-android, platform-macos, platform-web)

4581 [webview_flutter] Android implementation of loadFlutterAsset method. (cla: yes, waiting for tree to go green, p: webview_flutter, platform-android)