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

24357 [canvaskit] support adding leaf layers w/o container layers (cla: yes)

24358 Revert “Roll buildroot to 739be241578e7f12773eedb713df7fe3b0ec917b” (cla: yes)

24359 Roll Fuchsia Mac SDK from dzre2TRPg… to r37VPY1mX… (cla: yes, waiting for tree to go green)

24361 Roll Skia from dfa91793f8e9 to c616e1c1791c (16 revisions) (cla: yes, waiting for tree to go green)