This reverts commit 1742d256.

Reason for revert: Longer safepoint can cause deadlocks with global handles.

Original change's description:
> [heap] Add safepoints in Heap GC methods
> 
> Add safepoints to GC methods in Heap. There is still stuff in
> Heap::CollectGarbage which might work better or more precise in a global
> safepoint. Be conservative here and move everything into the safepoint,
> eventually we can start to move code out that is fine to run outside
> the safepoint.
> 
> Bug: v8:10315
> Change-Id: I656dfd72f032eff6f386cec63a02777506650aa7
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2335192
> Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#69228}

TBR=ulan@chromium.org,dinfuehr@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: v8:10315
Change-Id: Idaf575911b34674c16d46b41c2ebee9f56dbac6d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2339617Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69261}