This reverts commit 97997681.

Reason for revert: Races fixed. Skipping no longer needed.

Original change's description:
> Skip HeapTest.GrowAndShrinkNewSpace under tsan
>
> Bug: v8:13185
> Change-Id: I0c6e4ba8b325c3ac70dbceb927e2a8b1f9d68a16
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3830286
> Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
> Auto-Submit: Adam Klein <adamk@chromium.org>
> Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
> Cr-Commit-Position: refs/heads/main@{#82449}

Bug: v8:13185
Change-Id: I4e1c117250932358dbd8d09ebe2cc2d331e7236f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3844530
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Auto-Submit: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82618}