Parked threads are not allowed to create new handles or access the heap
in any other way. This is a pretty fundamental invariant of our
safepoint mechanism, which doesn't stop parked threads.

Change-Id: I577dbeffbb70e0843644cdc12ffbef022890c364
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3324542
Auto-Submit: Dominik Inführ <dinfuehr@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78316}