[UnifiedPDF] PDFs in <embed> and <object> do not clip
Pull request: https://github.com/WebKit/WebKit/pull/20334
Committed 270573@main (bd2dbdec504a): <https://commits.webkit.org/270573@main> Reviewed commits have been landed. Closing PR #20334 and removing active labels.
<rdar://problem/118255602>