AC-10472: Placing an order in GraphQL succeeds with an invalid shipping method

Author: wip44850

app/code/Magento/QuoteGraphQl/Plugin/ShippingMethodValidationRulePlugin.php

@@ -34,6 +34,7 @@ public function __construct(ValidationResultFactory $validationResultFactory)
      * @param ValidationResult[] $result
      * @param Quote $quote
      * @return ValidationResult[]
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      */
     public function afterValidate(
         ShippingMethodValidationRule $subject,
@@ -53,7 +54,6 @@ public function afterValidate(
             return $result;
         }
 
-        // If previously valid, rebuild with a generic error to mark invalid
         $existing = $result[0] ?? null;
         if ($existing instanceof ValidationResult && $existing->isValid()) {
             $result[0] = $this->validationResultFactory->create([