4319 [camera] Fix IllegalStateException being thrown in Android implementation when switching activities. (cla: yes, waiting for tree to go green, p: camera, platform-android)

4320 [flutter_plugin_tools] Remove an unnecessary logging message (cla: yes, waiting for tree to go green)

4322 [webview_flutter] Add download listener to Android webview (cla: yes, waiting for tree to go green, p: webview_flutter, platform-android)

4326 [ci] Update lewagon/wait-on-check-action to latest version. (cla: yes, waiting for tree to go green)

4327 [camera] Bump minimum Flutter version and iOS deployment target (cla: yes, waiting for tree to go green, p: camera, platform-ios)

4332 Run firebase test in flutter-cirrus (cla: yes, waiting for tree to go green)