Styled SSR Flash

A minimal demo reproducing @emotion/styled broken by browser extension.

Step to repoduce

1. start service by npm run dev and visit http://localhost:3000. Then you should be able to see a red text button. The button is styled by @emotion/styled. (See ./app/routes/index.tsx)
2. Load extension by visit chrome://extensions/, then toggle developer mode. Click Load unpacked button, and select the <project_root>/extension folder.
3. Revisit http://localhost:3000, the style is broken.