AXPropertyName::SelectedChildren for tree-role objects is not updated when their tree-item children become selected
<rdar://problem/101186153>
Created attachment 462993 [details] Patch
Committed 255587@main (bcdb262e70e8): <https://commits.webkit.org/255587@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 462993 [details].