Accessibility features (#14518)

* Add screen reader aria labels to buttons and menu items

* Fix sub_label score in search detail dialog

web/src/pages/Exports.tsx

@@ -125,6 +125,7 @@ function Exports() {
             <AlertDialogCancel>Cancel</AlertDialogCancel>
             <Button
               className="text-white"
+              aria-label="Delete Export"
               variant="destructive"
               onClick={() => onHandleDelete()}
             >