Media JS: ensure that wp.media.frame (a static reference to the "current" Frame) is reset when a cached frame is opened.

Fixes #33458.


git-svn-id: https://develop.svn.wordpress.org/trunk@34254 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/js/media-editor.js

@@ -670,6 +670,7 @@
 		 */
 		frame: function() {
 			if ( this._frame ) {
+				wp.media.frame = this._frame;
 				return this._frame;
 			}
 
@@ -1067,6 +1068,8 @@
 				workflow = this.add( id, options );
 			}
 
+			wp.media.frame = workflow;
+
 			return workflow.open();
 		},