Remove .tentative from popover invoker WPTs
The spec PR landed:
so this removes .tentative from the WPTs.
Bug: 364669918
Change-Id: I35e50fff8d94ff52e212844814a4e597c35d78b4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6025803
Commit-Queue: Di Zhang dizhangg@chromium.org
Reviewed-by: Di Zhang dizhangg@chromium.org
Auto-Submit: Mason Freed masonf@chromium.org
Cr-Commit-Position: refs/heads/main@{#1384325}