Reapply the XBlock RequireJS -> Webpack changes

This reverts commit 105db2cf59, reversing
changes made to 447457594f.

openedx/features/course_search/static/course_search/js/course_search_factory.js

@@ -56,5 +56,6 @@
                     router.trigger('search', requestedQuery);
                 }
             };
-        });
-}(define || RequireJS.define));
+        }
+    );
+}).call(this, define || RequireJS.define);