Fix basic template routes.ts (#12306)

Author: markdalgleish

templates/basic/app/routes.ts

@@ -1,4 +1,3 @@
-import type { RouteConfig } from "@react-router/dev/routes";
-import { index } from "@react-router/dev/routes";
+import { type RouteConfig, index } from "@react-router/dev/routes";
 
-export default [index("routes/home.tsx")] satisfies RouteConfig;
+export const routes: RouteConfig = [index("routes/home.tsx")];