Fix for accessibility/aria-tab-xxx.html tests in isolated tree mode.
<rdar://problem/90392451>
Created attachment 454895 [details] Patch
Created attachment 454914 [details] Patch fix for win expectation.
Created attachment 454916 [details] Patch fix for glib expectation.
Committed r291402 (248532@main): <https://commits.webkit.org/248532@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 454916 [details].