vite: index.html without JS breaks multi-page app setup linking to the same stylesheet

Describe the bug

There are two entry points (index.html and nojs.html). Both of them link to the same CSS stylesheet. There is an import for import"./nojs-ab7f0fe6.js"; in the generated main output, importing a file that doesn’t exists in the dist folder.

Note: Originally as #13426. Starting a new issue with a simplified reproduction.

Reproduction

https://stackblitz.com/edit/vitejs-vite-uhnk5n

Steps to reproduce

npm install npm run build

System Info

StackBlitz

Used Package Manager

npm

Logs

No response

Validations

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