Add test for ::details-content:hover and clean up some older tests.
Bug: 356158098, 1469418
Change-Id: Id3da2605b5d4ee9f72a60c1c37fe9ea8f9dbcef6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5921134
Auto-Submit: David Baron dbaron@chromium.org
Reviewed-by: Rune Lillesveen futhark@chromium.org
Commit-Queue: Rune Lillesveen futhark@chromium.org
Cr-Commit-Position: refs/heads/main@{#1366313}