rm optional chaining

Author: salazarm

packages/react-server/src/ReactFlightServer.js

@@ -131,7 +131,7 @@ export function createRequest(
   options?: RequestOptions,
 ): Request {
   const pingedSegments = [];
-  const onError = options?.onError;
+  const onError = options ? options.onError : undefined;
   const request = {
     status: OPEN,
     fatalError: null,