AC-2630 :: Getting error while adding product type Gift Card through Order By SKU in Customer Account

Author: glo71317

app/code/Magento/Checkout/view/frontend/templates/cart/item/configure/updatecart.phtml

@@ -40,11 +40,7 @@
     <script type="text/x-magento-init">
         {
             "#product_addtocart_form": {
-                "validation": {},
-                "addToCart": {
-                    "cartButtonId": "#product-updatecart-button",
-                    "cartForm": "#product_addtocart_form"
-                }
+                "Magento_Catalog/js/validate-product": {}
             }
         }
     </script>

app/code/Magento/SalesRule/etc/extension_attributes.xml

@@ -12,4 +12,7 @@
     <extension_attributes for="Magento\Quote\Api\Data\AddressInterface">
         <attribute code="discounts" type="Magento\SalesRule\Api\Data\RuleDiscountInterface[]" />
     </extension_attributes>
-</config>
+    <extension_attributes for="Magento\Catalog\Api\Data\ProductInterface">
+        <attribute code="discounts" type="Magento\SalesRule\Api\Data\RuleDiscountInterface[]" />
+    </extension_attributes>
+</config>