- Use non-idle tasks to be able to process finalizers on time.
- Only process finalizers while concurrent marking is still running.

Bug: v8:13294
Change-Id: I1a2812c3fc350ea679c4c916c230cf736f2aa3ea
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3904648
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Cr-Commit-Position: refs/heads/main@{#83367}