Fix errant CHECK in popover=hint code
Since the entire popover=hint stack gets closed just above
this, it's possible (see new test) that event handlers also
close the target popover. In that case, just return.
Fixed: 363243904
Change-Id: I868228a9c80df1919e5856b1cafc249f5c7ed820
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5848008
Commit-Queue: Joey Arhar jarhar@chromium.org
Reviewed-by: Joey Arhar jarhar@chromium.org
Auto-Submit: Mason Freed masonf@chromium.org
Cr-Commit-Position: refs/heads/main@{#1353373}