ACP2E-3410: Configurable product edit form load causes timeout and memory exhaustion

Author: aplapana

app/code/Magento/ConfigurableProduct/view/adminhtml/templates/catalog/product/edit/super/wizard.phtml

@@ -6,6 +6,7 @@
 
 /** @var $block \Magento\ConfigurableProduct\Block\Adminhtml\Product\Edit\Tab\Variations\Config\Matrix */
 /** @var \Magento\Framework\View\Helper\SecureHtmlRenderer $secureRenderer */
+/** @var \Magento\Framework\Escaper $escaper */
 ?>
 <?php
 /** @var \Magento\Framework\Json\Helper\Data $jsonHelper */
@@ -29,7 +30,7 @@ $currencySymbol = $block->getCurrencySymbol();
                     "<?= /* @noEscape */ $block->getData('config/form') ?>.<?= /* @noEscape */ $block->getModal() ?>": {
                         "component": "Magento_ConfigurableProduct/js/components/modal-configurable",
                         "options": {"type": "slide",
-                         "title": "<?= $block->escapeHtml(__('Create Product Configurations')) ?>"},
+                         "title": "<?= $escaper->escapeHtml(__('Create Product Configurations')) ?>"},
                         "formName": "<?= /* @noEscape */ $block->getForm() ?>",
                         "isTemplate": false,
                         "stepWizard": "<?= /* @noEscape */ $block->getData('config/nameStepWizard') ?>",
@@ -55,8 +56,10 @@ $currencySymbol = $block->getCurrencySymbol();
                         ?>.configurable_attribute_set_handler_modal",
                         "wizardModalButtonName": "<?= /* @noEscape */ $block->getForm()
                         ?>.configurable.configurable_products_button_set.create_configurable_products_button",
-                        "wizardModalButtonTitle": "<?= $block->escapeHtml(__('Edit Configurations')) ?>",
-                        "productAttributes":<?=/* @noEscape */ $jsonHelper->jsonEncode($block->getProductAttributes())?>,
+                        "wizardModalButtonTitle": "<?= $escaper->escapeHtml(__('Edit Configurations')) ?>",
+                        "productAttributes":<?=/* @noEscape */ $jsonHelper->jsonEncode(
+                            $block->getProductAttributes()
+                        )?>,
                         "productUrl": "<?= /* @noEscape */ $block->getUrl('catalog/product/edit', ['id' => '%id%']) ?>",
                         "variations": <?= /* @noEscape */ $jsonHelper->jsonEncode($block->getProductMatrix()) ?>,
                         "currencySymbol": "<?= /* @noEscape */ $currencySymbol ?>",