3986 [video_player] Add iOS unit and UI tests (cla: yes, waiting for tree to go green, p: video_player, platform-ios)

3987 [url_launcher] Add iOS unit and UI tests (cla: yes, waiting for tree to go green, p: url_launcher, platform-ios)

3992 [camera] Prevent crash when setting unsupported FocusMode (cla: yes, p: camera, platform-ios)

3995 [webview_flutter] Add iOS integration tests (cla: yes, waiting for tree to go green, p: webview_flutter, platform-ios)

3996 [google_sign_in] Add iOS unit and UI tests (cla: yes, waiting for tree to go green, p: google_sign_in, platform-ios)

3997 [ios_platform_images] Add iOS unit tests (cla: yes, p: ios_platform_images, platform-ios)