`Equals` did not properly account for arrays with odd lengths.

Bug: v8:11069
Change-Id: I3264ebef248adcecd59b902bf1521cfddbd5a69d
Fixed: chromium:1267674
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3264218
Auto-Submit: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77756}