ENGCOM-5119: [Backport] 404 not found form validation url when updating quantity in cart page #22907

Author: sidolov

app/code/Magento/Checkout/view/frontend/templates/cart/form.phtml

@@ -14,7 +14,7 @@
           method="post"
           id="form-validate"
           data-mage-init='{"Magento_Checkout/js/action/update-shopping-cart":
-              {"validationURL" : "/checkout/cart/updateItemQty",
+              {"validationURL" : "<?= /* @escapeNotVerified */ $block->getUrl('checkout/cart/updateItemQty') ?>",
               "updateCartActionContainer": "#update_cart_action_container"}
           }'
           class="form form-cart">