upd: if VITE_SERVER_PORT is not defined, use default 3000 (#2433)

Co-authored-by: Sayo <hi@sayo.wtf>

Author: JoeyKhd

client/src/lib/api.ts

@@ -1,6 +1,6 @@
 import { type UUID, type Character } from "@elizaos/core";
 
-const BASE_URL = `http://localhost:${import.meta.env.VITE_SERVER_PORT}`;
+const BASE_URL = `http://localhost:${import.meta.env.VITE_SERVER_PORT ?? 3000}`;
 
 const fetcher = async ({
     url,