21922 Require that FLUTTER_NOLINT include issue link (cla: yes)

21923 Roll Skia from 418eda2c599a to f9c7b2803461 (3 revisions) (cla: yes, waiting for tree to go green)

21924 Revert “[fuchsia] External view embedder will be shared with platform view” (cla: yes)

21926 Set strokeCap, strokeJoin, and strokeMiter when resurrecting Paint (cla: yes, waiting for tree to go green)

21927 Define SK_VULKAN for clang-tidy runs (cla: yes, code health)

21928 [web] Fix scroll wheel line delta on Firefox. (cla: yes, platform-web)