Fix link widget propogation behaviour

Without this fix, using nested link widgets with custom elements causes
clicks on the inner element to trigger links on each of the containing
widgets

core/modules/widgets/link.js

@@ -135,9 +135,9 @@ LinkWidget.prototype.handleClickEvent = function(event) {
 	});
 	if(this.domNodes[0].hasAttribute("href")) {
 		event.preventDefault();
-		event.stopPropagation();
-		return false;
 	}
+	event.stopPropagation();
+	return false;
 };
 
 LinkWidget.prototype.handleDragStartEvent = function(event) {