No WPT, but see: https://drafts.csswg.org/css-text-decor/#text-underline-position-property
<rdar://problem/94615165>
Pull request: https://github.com/WebKit/WebKit/pull/31100
Submitted web-platform-tests pull request: https://github.com/web-platform-tests/wpt/pull/47256
Committed 281245@main (0797bbb8c4f2): <https://commits.webkit.org/281245@main> Reviewed commits have been landed. Closing PR #31100 and removing active labels.