Fix: OnDestroyListener doesn't fire

https://community.appinventor.mit.edu/t/ondestroy-not-fired/5341

Change-Id: Id4ed0ed02ab23cc33b904c90c3d41c702e4bc019

appinventor/components/src/com/google/appinventor/components/runtime/Form.java

@@ -792,7 +792,6 @@ public class Form extends AppInventorCompatActivity
 
   @Override
   protected void onDestroy() {
-    super.onDestroy();
     // for debugging and future growth
     Log.i(LOG_TAG, "Form " + formName + " got onDestroy");
 
@@ -802,6 +801,9 @@ public class Form extends AppInventorCompatActivity
     for (OnDestroyListener onDestroyListener : onDestroyListeners) {
       onDestroyListener.onDestroy();
     }
+
+    // call super method at the end to delegate the destruction of the app to the parent
+    super.onDestroy();
   }
 
   public void registerForOnDestroy(OnDestroyListener component) {