Write barriers are automatically emitted by v8::TracedReference.

Bug: v8:12165
Change-Id: I6ee9b95e9d25fe9606ce1b11b21b3905d47ee8cb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3253343Reviewed-by: Omer Katz <omerkatz@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77642}