.map file that is in fsServe.root is defined as one that is outside

[cawa-93]

Describe the bug

After upgrading to 2.3, I added changes to my configuration:

  server: {
    fsServe: {
      root: path.join(PROJECT_ROOT, '../../'),
    },
  }

and get the following error:

The request url "C:\Users\kozac\Dev\anime-library\node_modules\.vite\chunk-MH57LHOP.js.map" is outside of vite dev server root "C:/Users/kozac/Dev/anime-library"

It seems that the problem only applies to .map files. The rest of the files load as expected, and the application works despite the error:

Reproduction

Target Repo and branch: https://github.com/cawa-93/anime-library/tree/subtitles
Steps to reproduce:

1. git clone git@github.com:cawa-93/anime-library.git
2. git checkout subtitles
3. npm ci
4. npm run watch

System Info

Output of npx envinfo --system --npmPackages vite,@vitejs/plugin-vue --binaries --browsers:

 System:
    OS: Windows 10 10.0.19042
    CPU: (16) x64 AMD Ryzen 7 4800H with Radeon Graphics
    Memory: 6.22 GB / 15.42 GB
  Binaries:
    Node: 14.16.1 - C:\Program Files\nodejs\node.EXE
    Yarn: 1.22.10 - ~\AppData\Roaming\npm\yarn.CMD
    npm: 7.10.0 - C:\Program Files\nodejs\npm.CMD
  Browsers:
    Edge: Spartan (44.19041.423.0), Chromium (90.0.818.56)
    Internet Explorer: 11.0.19041.1
  npmPackages:
    @vitejs/plugin-vue: ^1.2.2 => 1.2.2
    vite: ^2.3.0 => 2.3.0

Used package manager: npm

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