Draggable: Change $.ui.contains() to $.contains(). Fixes #9051 - Draggable: Reference to undefined $.ui.contains().

Author: vahid-sohrabloo

ui/jquery.ui.draggable.js

@@ -643,7 +643,7 @@ $.ui.plugin.add("draggable", "connectToSortable", {
 					this.instance.offset.click = inst.offset.click;
 					if (this !== thisSortable &&
 						this.instance._intersectsWith(this.instance.containerCache) &&
-						$.ui.contains(thisSortable.instance.element[0], this.instance.element[0])
+						$.contains(thisSortable.instance.element[0], this.instance.element[0])
 					) {
 						innermostIntersecting = false;
 					}