Followup to https://bugs.webkit.org/show_bug.cgi?id=210963 to cover pseudo elements.
<rdar://problem/103983707>
Pull request: https://github.com/WebKit/WebKit/pull/8350
Committed 258622@main (4c22f9946fdd): <https://commits.webkit.org/258622@main> Reviewed commits have been landed. Closing PR #8350 and removing active labels.