16546 Revert “Use os_log instead of syslog on Apple platforms (#13487)” (cla: yes)

16547 Samsung duplication bug hack-fix (affects: text input, cla: yes, platform-android, waiting for tree to go green)

16548 [fuchsia] Disable retained layers (cla: yes)

16549 Re-land: Use os_log instead of syslog on Apple platforms (cla: yes, waiting for tree to go green)

16550 [web] skipping unit tests in Safari (cla: yes, platform-web)

16552 Exposes FlutterView, FlutterSurfaceView, and FlutterTextureView to FlutterActivity and FlutterFragment. (#41984, #47557) (cla: yes)