fix(react-router): fix ClientDataFunctionArgs' context

Author: MichaelDeBoey

.changeset/tasty-beers-whisper.md

@@ -0,0 +1,5 @@
+---
+"react-router": patch
+---
+
+Fix `ClientDataFunctionArgs`' `context`

packages/react-router/lib/types/route-module.ts

@@ -141,14 +141,13 @@ type ClientDataFunctionArgs<T extends RouteInfo> = {
    **/
   params: T["params"];
   /**
-   * When `future.unstable_middleware` is not enabled, this is undefined.
-   *
-   * When `future.unstable_middleware` is enabled, this is an instance of
-   * `unstable_RouterContextProvider` and can be used to access context values
-   * from your route middlewares.  You may pass in initial context values in your
-   * `<HydratedRouter unstable_getContext>` prop
+   * This is a `RouterContextProvider` instance generated from your router's
+   * `unstable_getContext` function and/or populated from route middleware
+   * functions.
    */
-  context: unstable_RouterContextProvider;
+  context: MiddlewareEnabled extends true
+    ? unstable_RouterContextProvider
+    : undefined;
 };
 
 type ServerDataFunctionArgs<T extends RouteInfo> = {