4502 Bump plugin Android compileSdkVersions to 31 (cla: yes, waiting for tree to go green, p: battery, p: webview_flutter, p: android_alarm_manager, p: android_intent, p: google_maps_flutter, p: google_sign_in, p: image_picker, p: in_app_purchase, p: local_auth, p: path_provider, p: share, p: url_launcher, p: video_player, p: package_info, p: shared_preferences, p: espresso, p: wifi_info_flutter, p: sensors, p: quick_actions, p: connectivity, p: device_info, platform-android, p: flutter_plugin_android_lifecycle, needs tests)

4508 [battery] Recreate Android example (cla: yes, p: battery, platform-android, needs tests)