23680 Roll Skia from f435ada424df to 8f78d5528438 (7 revisions) (cla: yes, waiting for tree to go green)

23685 [canvaskit] fix addPlaceholder JS bindings; add paragraph test (cla: yes, platform-web, waiting for tree to go green)

23692 Roll Skia from 8f78d5528438 to 890b2b406a60 (9 revisions) (cla: yes, waiting for tree to go green)

23693 Roll Fuchsia Mac SDK from BoBy7Eobf… to DVYrV15dq… (cla: yes, waiting for tree to go green)

23694 Ensure gen_snapshot for the target is built when needed (cla: yes, waiting for tree to go green)