ENGCOM-1807: [Forwardport] Refactor javascript code of button split widget #15731

Author: VladimirZaets

app/code/Magento/Backend/view/adminhtml/templates/widget/button/split.phtml

@@ -41,11 +41,11 @@
     <?php endif; ?>
 </div>
 
-<script>
-require(['jquery'], function($){
-        $('.actions-split')
-            .on('click.splitDefault', '.action-default', function() {
-                $(this).siblings('.dropdown-menu').find('.item-default').trigger('click');
-            });
-});
+<script type="text/x-magento-init">
+    {
+        ".actions-split": {
+            "Magento_Ui/js/grid/controls/button/split": {}
+        }
+    }
 </script>
+