fix(types, medusa): request / response types clean-up (#9043)

More clean-up of request / response types

integration-tests/modules/__tests__/fixtures/fulfillment/index.ts

@@ -49,7 +49,6 @@ export function generateCreateFulfillmentData(
         label_url: "test-label-url_" + randomString,
       },
     ],
-    order: data.order ?? {},
     order_id: data.order_id,
   }
 }