fix windows

Author: PupilTong

packages/web-platform/web-mcp-server/test/test.spec.ts

@@ -21,7 +21,7 @@ client.connect(
 );
 // now create rsbuild dev server
 const reactLynxExampleRoot = path.join(__dirname, '../../../../examples/react');
-const rspeedy = spawn('npx', ['pnpm', 'dev'], {
+const rspeedy = spawn('pnpm', ['dev'], {
   cwd: reactLynxExampleRoot,
   stdio: 'ignore',
 });