This can be done since --local-heaps is also temporarily enabled. This
lets us perform a reverse finch trial and start testing out direct heap
access.

Bug: chromium:1125606, v8:7790
Change-Id: I746e459824aa345dec8184bccc21bbd54070e3b4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2396077Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69718}