24253 Define FLUTTER_ENABLE_SKSHAPER consistently when building txt_unittests and txt_benchmarks (cla: yes, waiting for tree to go green)

24263 Fix retain cycles in MacOS embedder (cla: yes)

24264 Unblock FlutterResizeSynchronizer on engine shutdown (cla: yes, waiting for tree to go green)

24272 Fix ImageReader may leak images when onDraw() not called (cla: yes, platform-android, waiting for tree to go green)

24278 Add support for arm64 simulator builds to create_ios_framework.py (cla: yes, waiting for tree to go green)

24288 [Android Text Input] Remove Samsung restart input workaround for newer Samsung keyboards (cla: yes, platform-android, waiting for tree to go green)