20704 fuchsia: Clean shell_unittests under FEMU (affects: tests, cla: yes, platform-fuchsia)

20767 [web] Better format for line break tests (affects: tests, cla: yes, platform-web, waiting for tree to go green)

20984 fuchsia: Compile disabled RasterThreadMerger code (affects: tests, cla: yes, platform-fuchsia, waiting for tree to go green)

platform-windows - 7 pull request(s)

19896 [windows] Separate the engine from the view (affects: desktop, cla: yes, platform-windows)

19983 Make EncodableValue a thin std::variant wrapper (affects: engine, cla: yes, glfw, platform-windows)