ENGCOM-5647: Resolve No validate "Sort Order" in Widget Form (issue 24154) #24155

Author: sidolov

app/code/Magento/Widget/Block/Adminhtml/Widget/Instance/Edit/Tab/Main.php

@@ -3,7 +3,7 @@
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
-
+declare(strict_types=1);
 /**
  * Widget Instance Main tab block
  *
@@ -12,6 +12,8 @@
 namespace Magento\Widget\Block\Adminhtml\Widget\Instance\Edit\Tab;
 
 /**
+ * Edit Main Tab
+ *
  * @api
  * @since 100.0.2
  */
@@ -198,7 +200,7 @@ protected function _prepareForm()
                 'name' => 'sort_order',
                 'label' => __('Sort Order'),
                 'title' => __('Sort Order'),
-                'class' => '',
+                'class' => 'validate-number',
                 'required' => false,
                 'note' => __('Sort Order of widget instances in the same container')
             ]