AC-15856: Internal Server Error When Adding Gift Card product to Cart via AddProductsToCart Mutation including custom_attributesV2

Remove banned word to fix static sanity check error

Author: sumesh-GL

app/code/Magento/CatalogGraphQl/Test/Unit/Model/Resolver/Product/ProductCustomAttributesTest.php

@@ -229,7 +229,7 @@ public function testResolveWithFlatArrayAttribute(): void
     public function testResolveWithMultiDimensionalArrayAttribute(): void
     {
         $productId = 1;
-        $attributeCode = 'giftcard_amounts';
+        $attributeCode = 'gift_card_amounts';
 
         $attributeMock = $this->getMockForAbstractClass(AttributeInterface::class);
         $attributeMock->method('getAttributeCode')->willReturn($attributeCode);

dev/tests/api-functional/testsuite/Magento/GraphQl/Catalog/Product/CustomAttributesV2Test.php

@@ -94,7 +94,7 @@ public function testCustomAttributesV2WithSimpleProduct()
     /**
      * Test that custom_attributesV2 gracefully handles multi-dimensional array attributes
      *
-     * This test verifies that attributes with complex nested array structures (like giftcard_amounts)
+     * This test verifies that attributes with complex nested array structures
      * are skipped without causing errors, while other simple attributes are still returned.
      *
      * @return void