Adds a verification step when we're compiling on heap.

Bug: v8:11872
Change-Id: Ic71dc2b54e667ed4d5d861b4b9c1e1c2362f9821
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3013936
Auto-Submit: Victor Gomes <victorgomes@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75630}