Fastpath failed to store the hole on the array left side.

Bug: chromium:940274
Change-Id: I1eca7b241030474cf5aed6c68f155a1d22ae553e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1617255
Commit-Queue: Michael Stanton <mvstanton@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61618}