chore: remove TODO comment

Author: sapphi-red

playground/backend-integration/vite.config.js

@@ -26,8 +26,6 @@ function BackendIntegrationExample() {
           // same port in playground/test-utils.ts
           port: 5009,
           strictPort: true,
-          // TODO: should this be automatically inferred from dev server address?
-          // (see "boolean or string" discussions in https://github.com/vitejs/vite/pull/4337)
           origin: 'http://localhost:5009',
         },
         build: {