AC-4958: Multiselect/select attribute options can be saved when Swatches modules disabled

Author: wip44850

app/code/Magento/Catalog/view/adminhtml/templates/catalog/product/attribute/js.phtml

@@ -13,6 +13,9 @@ use Magento\Catalog\Helper\Data;
 <?php
 /** @var \Magento\Framework\Json\Helper\Data $jsonHelper */
 $jsonHelper = $block->getData('jsonHelper');
+if (!method_exists($jsonHelper, 'getAttributeHiddenFields')) {
+    $jsonHelper = $this->helper(Data::class);
+}
 $scriptString = <<<script
 require([
     "jquery",