4545 [webview_flutter] Migrate webview_flutter_wkwebview to analysis_options.yaml (cla: yes, waiting for tree to go green, p: webview_flutter, platform-ios)

4551 [url_launcher] Switch to new analysis options (cla: yes, p: url_launcher, platform-ios, platform-android, platform-windows, platform-macos, platform-linux, platform-web)

4554 [webview_flutter] Updates webview_flutter_platform_interface to version 1.5.2 (cla: yes, p: webview_flutter, platform-ios, needs tests)

4556 [webview_flutter] Add iOS implementations for new cookie manager, to allow setting cookies directly and on webview creation. (cla: yes, waiting for tree to go green, p: webview_flutter, platform-ios)