9425 Resolves embedding log chattyness by disabling verbose, debug, and info logs by default (#34876). (cla: yes)

9426 delegate checkInputConnectionProxy to the relevant platform view (cla: yes)

9428 Update README.md for consistency with framework (cla: yes)

9429 Revert “Update harfbuzz to 2.5.2” (cla: yes)

9430 Use goma-aware Fuchsia clang toolchain (cla: yes)

9431 Generate weak pointers only in the platform thread (cla: yes)

9432 Ios unit tests choose engine (cla: yes)

9433 Reland Update harfbuzz to 2.5.2 (#9406) (cla: yes)