fix(interim): validate the interim element while closing it (#11509)

Reverting part of the previous commit as it introduced breaking changes
to the nested menu.

Fixes #11507 Relates to #10715

Author: marosoft

src/core/services/interimElement/interimElement.js

@@ -358,7 +358,7 @@ function InterimElementProvider() {
         }
 
         // Hide the latest showing interim element.
-        return closeElement(showingInterims.pop());
+        return closeElement(showingInterims[showingInterims.length - 1]);
 
         function closeElement(interim) {
 
@@ -373,6 +373,7 @@ function InterimElementProvider() {
               hidePromises.splice(hidePromises.indexOf(hideAction), 1);
             });
 
+          showingInterims.splice(showingInterims.indexOf(interim), 1);
           hidePromises.push(hideAction);
 
           return interim.deferred.promise;