Update ServiceInputProcessor.php

Enable WebAPI interface to handle parameters through constructor #14801
- New optional param should be last in the params list.

Author: VladimirZaets

lib/internal/Magento/Framework/Webapi/ServiceInputProcessor.php

@@ -89,8 +89,8 @@ public function __construct(
         AttributeValueFactory $attributeValueFactory,
         CustomAttributeTypeLocatorInterface $customAttributeTypeLocator,
         MethodsMap $methodsMap,
-        ConfigInterface $config = null,
-        ServiceTypeToEntityTypeMap $serviceTypeToEntityTypeMap = null
+        ServiceTypeToEntityTypeMap $serviceTypeToEntityTypeMap = null,
+        ConfigInterface $config = null
     ) {
         $this->typeProcessor = $typeProcessor;
         $this->objectManager = $objectManager;