REGRESSION: [UI-side compositing] MiniBrowser hangs on launch
<rdar://problem/106832318>
Pull request: https://github.com/WebKit/WebKit/pull/11631
Committed 261780@main (ea0d87c3bc05): <https://commits.webkit.org/261780@main> Reviewed commits have been landed. Closing PR #11631 and removing active labels.