Add more NOT_DESTROYED() to LayoutObject functions.

See e.g. crrev.com/c/6097987 . That issue would have been discovered
and fixed much sooner if every function had had NOT_DESTROYED().

PhysicalAnchorQuery has been using LayoutObject::IsBeforeInPreOrder()
for a long time already, but since it had no NOT_DESTROYED(), the
problematic approach went unnoticed.

Change-Id: I03cbc8ac9691e8595602e2b07ec5386b53c2f19c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6310099
Reviewed-by: Anders Hartvoll Ruud <andruud@chromium.org>
Commit-Queue: Morten Stenshorne <mstensho@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1428169}