Mark popover-focus-2.html as a slow test
Chromium is failing due to a timeout:
https://wpt.fyi/results/html/semantics/popovers/popover-focus-2.html
with the test taking ~10 seconds. Let's leave it more time.
Fixed: 40287045
Change-Id: I2bbcfb8f691cb9992cdba2e1a180c0515e1ef053
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5530626
Reviewed-by: Joey Arhar jarhar@chromium.org
Commit-Queue: Joey Arhar jarhar@chromium.org
Auto-Submit: Mason Freed masonf@chromium.org
Cr-Commit-Position: refs/heads/main@{#1299322}