This CL handlifies the result of the Wait method to avoid possible
pointer invalidation caused by a call to RunAtomicsWaitCallback.

Bug: v8:9986
Change-Id: Iafb5d84ce372df3d75e408cfec73153b9f552493
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2161069Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Ben Smith <binji@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67336}