fix(examples): remove unnecessary dotenv import from WorkOS example

Vite automatically loads .env files, so the manual dotenv.config() call is unnecessary and causes a build failure since dotenv is not installed as a dependency.

Author: nicknisi

examples/react/start-workos/vite.config.ts

@@ -2,10 +2,6 @@ import { defineConfig } from 'vite';
 import tsConfigPaths from 'vite-tsconfig-paths';
 import { tanstackStart } from '@tanstack/react-start/plugin/vite';
 import viteReact from '@vitejs/plugin-react';
-import * as dotenv from 'dotenv';
-
-// Load .env file
-dotenv.config();
 
 export default defineConfig({
   server: {