We use a mutex to avoid data race when reading/writing to the
code object registry.

Functions called only by the sweeper happens during safepoints and
do not need to be protected by the mutex.

Bug: v8:12054
Change-Id: Ie85bf0422622eee7f2836ecae132397a6aa4ed59
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3234721
Commit-Queue: Victor Gomes <victorgomes@chromium.org>
Auto-Submit: Victor Gomes <victorgomes@chromium.org>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77490}