This is a reland of 04cdcd5a

Got reverted in https://crrev.com/c/v8/v8/+/2534294 due to
TSAN issues. Those are solved in https://crrev.com/c/v8/v8/+/2537693.

Original change's description:
> [compiler] Move InternalizedString to kNeverSerialized
>
> Bug: v8:7790
> Change-Id: I8311b1f4b8239d0688a4b9b9057d6082942bbc00
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2534471
> Reviewed-by: Georg Neis <neis@chromium.org>
> Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#71159}

Bug: v8:7790
Change-Id: I95d68e23e4bc81399bcdcf7ce2fdcf49ddfb66c5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2536641
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71180}