OldGenerationAllocationCounter() needs to be invoked in safepoint,
otherwise invocation races with background threads incrementing the
counter.

First landed in https://crrev.com/c/2235544 and relanded in https://crrev.com/c/2259854 because of regressions. This CL also invokes UpdateNewSpaceAllocationCounter() in the safepoint.

Bug: v8:10315
Change-Id: I6104bed0aad848250feecfe51d6d849b184a8842
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2260560
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#68614}