Ensure that widget carets close when dragging an expanded widget.

Props sdavis2702, mindctrl.
Fixes #33578.


git-svn-id: https://develop.svn.wordpress.org/trunk@34165 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/js/widgets.js

@@ -178,6 +178,7 @@ wpWidgets = {
 					inside = ui.item.children('.widget-inside');
 
 				if ( inside.css('display') === 'block' ) {
+					ui.item.removeClass('open');
 					inside.hide();
 					$(this).sortable('refreshPositions');
 				}