Vite Plugin HTML Reproduction issue #37

Reproduction for this issue to learn more.

Steps to reproduce

1. run npm install
2. run npm run dev
3. you can see in the browser that you can switch between the pages index.html and secondary-page.html
4. uncomment lines 12-19 in vite.config.ts to enable vite-plugin-html (the injection isnt really used here)
5. you should now see in the browser, that you can not visit localhost:3000/secondary-page.html as the server now always serves the index.html