chore: remove unused @ts-expect-error

Author: yyx990803

playground/vue-lib/vite.config.lib.ts

@@ -13,7 +13,6 @@ export default defineConfig({
       fileName: 'my-vue-lib',
       // Vite 6 only property to give a specific name to the css file.
       // Set as "style" to match Vite 5 for testing purposes.
-      // @ts-expect-error
       cssFileName: 'style',
     },
     rollupOptions: {