Fix CHECK failures when display locked links are force updated

The speculation rule set will mark the display locked links as pending
when their style gets force updated. This is causing CHECK errors on
certain pages. The CL fixes the issue by revisiting all the child nodes
of the force-updated roots and marking them as stale. The CL also adds a
regression test for the issue.

Bug: 411367105
Change-Id: I02966bb18d3b59ee94cc564e8f53878100c66925
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6586141
Reviewed-by: Lingqi Chi <lingqi@chromium.org>
Commit-Queue: Jiacheng Guo <gjc@google.com>
Reviewed-by: Hiroki Nakagawa <nhiroki@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1467304}