Instead of just comparing the first 4 elements, load and loop
over the entire array so that we don't miss out on deprecate
maps.

Bug: v8:10582
Change-Id: I67542e2ab24367a11a4bb84b6745a4fa80c42772
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2524441
Commit-Queue: Sathya Gunasekaran  <gsathya@chromium.org>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71141}