correct event listener to reload media gallery

Author: Nazar65

lib/web/mage/adminhtml/browser.js

@@ -138,9 +138,10 @@ define([
                 'click #delete_files': 'deleteFiles',
                 'click #insert_files': 'insertSelectedFiles',
                 'fileuploaddone': '_uploadDone',
-                'click [data-row=breadcrumb]': 'selectFolder',
-                'reload.MediaGallery': 'reload'
+                'click [data-row=breadcrumb]': 'selectFolder'
             });
+
+            $(window).on('reload.MediaGallery', $.proxy(this.reload, this));
             this.activeNode = null;
             //tree dont use event bubbling
             this.tree = this.element.find('[data-role=tree]');