View transitions: names should be tree-scoped rather then nodes
See spec PR: w3c/csswg-drafts#10528
Using a new runtime flag so that it can be backported to M127.
Bug: 349653208
Change-Id: Ifce6ee159ca44c5d8a54739ef050354eed5acf22
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5678884
Commit-Queue: Noam Rosenthal nrosenthal@chromium.org
Reviewed-by: Khushal Sagar khushalsagar@chromium.org
Cr-Commit-Position: refs/heads/main@{#1323734}