[A11y] Improve crash reports for previous/new parent mismatch

This DCHECK is triggered on calendar.google.com, and is related to
a node that used to be owned no longer believing it is owned, but
it still has the previously owning parent.

Bug: 41494326
Change-Id: Id4dcffef19a24d0332f9969d7a8997c2b88906be
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5605076


Reviewed-by: Mark Schillaci <mschillaci@google.com>
Commit-Queue: Mark Schillaci <mschillaci@google.com>
Auto-Submit: Aaron Leventhal <aleventhal@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1312367}