Following bug 261993, imported/w3c/web-platform-tests/css/css-contain/content-visibility/content-visibility-video.html always fail on macOS-Release-WK2-Stress https://ews-build.webkit.org/#/builders/8/builds/17589 needs follow-up investigation
<rdar://problem/115966231>
cause is the same for both this and bug 262019 *** This bug has been marked as a duplicate of bug 262019 ***