Media: Maintain event bindings in the main embed view. see #21390.

git-svn-id: https://develop.svn.wordpress.org/trunk@22716 602fd350-edb4-49c9-b593-d223f7449a82

wp-includes/js/media-views.js

@@ -3285,6 +3285,7 @@
 		render: function() {
 			this.$el.html([ this.url.el, this._settings.el ]);
 			this.url.focus();
+			this.views.render();
 			return this;
 		},