Rename view-transition-group tests to .tentative.
(The feature is still experimental)
Bug: 347947051
Change-Id: I7bcbba7959d5316095016c747bf6e9c823e516bf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5768677
Commit-Queue: Khushal Sagar khushalsagar@chromium.org
Auto-Submit: Noam Rosenthal nrosenthal@chromium.org
Reviewed-by: Khushal Sagar khushalsagar@chromium.org
Cr-Commit-Position: refs/heads/main@{#1338607}