This has similar performance as the thread_id check. It removes the need
to get the isolate for this check though, so it's a net positive.

Bug: v8:7790
Change-Id: I329bb9d5fe695fb9ef4990ba3593703b1eedca0d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2546690Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71259}