MC-41900: Fix jQuery.isArray()

Author: svera

app/code/Magento/PageBuilder/view/adminhtml/web/js/form/element/block-chooser.js

@@ -84,7 +84,7 @@ define([
                         this.errorMessage(this.messages.UNKOWN_ERROR);
 
                         return;
-                    } else if ($.isArray(response)) {
+                    } else if (Array.isArray(response)) {
                         this.meta({});
                         this.errorMessage(this.messages.UNKNOWN_SELECTION);