According to the spec, fullscreen elements should match the :modal pseudo-class since they block outside interaction: https://w3c.github.io/csswg-drafts/selectors-4/#modal-state
<rdar://problem/100782746>
Pull request: https://github.com/WebKit/WebKit/pull/7308
Submitted web-platform-tests pull request: https://github.com/web-platform-tests/wpt/pull/37395
Committed 257572@main (56d7f894da59): <https://commits.webkit.org/257572@main> Reviewed commits have been landed. Closing PR #7308 and removing active labels.