They should not bubble per https://github.com/whatwg/html/issues/8888
<rdar://problem/105764253>
Pull request: https://github.com/WebKit/WebKit/pull/10498
Submitted web-platform-tests pull request: https://github.com/web-platform-tests/wpt/pull/38640
Committed 260661@main (06cfbc919d07): <https://commits.webkit.org/260661@main> Reviewed commits have been landed. Closing PR #10498 and removing active labels.