Several places in AXObjectCache manually check that m_pageID is not std::nullopt rather than using the existing AXIsolatedTree::treeForPageID(std::optional<PageIdentifier>) method.
<rdar://problem/101462585>
Created attachment 463168 [details] Patch
Committed 255891@main (ff6a48ca8eab): <https://commits.webkit.org/255891@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 463168 [details].