This is a reland of 6d99f933

No changes since revert.

Original change's description:
> [compiler] Replace EnsureElementsTenured by IsElementsTenured
>
> We can't mutate heap state from the compiler thread; turn this into a
> predicate and emit generic code if it returns false.
>
> Bug: v8:7790
> Change-Id: I6186a87e178d0c0206b6e7659fa2a41bf65fd835
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2876845
> Commit-Queue: Jakob Gruber <jgruber@chromium.org>
> Reviewed-by: Georg Neis <neis@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#74596}

Tbr: neis@chromium.org
Bug: v8:7790
Change-Id: I9cfdcf9929870a8314486292bab91e83cb448410
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2917605Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74775}