See https://github.com/w3c/csswg-drafts/issues/7722
<rdar://problem/99848667>
Pull request: https://github.com/WebKit/WebKit/pull/4294
Committed 254422@main (b3153ed03ada): <https://commits.webkit.org/254422@main> Reviewed commits have been landed. Closing PR #4294 and removing active labels.