.. in AccessInfoFactory. In order to be read safely, they must pass
the IsPendingAllocation predicate, called internally from TryMakeRef.

In a follow-up, DescriptorArrayRef methods should also be updated
similarly.

Bug: v8:7790,chromium:1236373
Change-Id: I96b59458033c327e3d2e01e8e4496e2c91609eb5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3080560
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Auto-Submit: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#76153}