24308 Fix FlutterPlatformViewSemanticsContainer retain cycle with SemanticsObject (cla: yes, platform-ios, waiting for tree to go green)

24331 Revert “Reland “[metal] Darwin unified external metal textures (#2415… (cla: yes, platform-ios, waiting for tree to go green)

24333 Always set change type to cancel with touchesCancelled on iOS platform view (cla: yes, platform-ios, waiting for tree to go green)

24350 Reland “[metal] Darwin unified external metal textures (#24157)” (cla: yes, platform-ios)

24356 Refactor GPU access switch (cla: yes, embedder, platform-android, platform-fuchsia, platform-ios)