url become case sensitive after build

[gyhyfj]

Describe the bug

url become case sensitive after build, the wrong case will lead to 404

Reproduction

Just create a md file like Hello.md, and set path as path/to/hello in .vitepress/config.ts，
then I can access this page by path/to/hello when run docs:dev
but after build, this url is 404 page, even if I try path/to/Hello.
Only if I modify path/to/hello to path/to/Hello in .vitepress/config.ts, this url can work again after build

Expected behavior

Expect case unsensitive after build

System Info

System:
    OS: Windows 10 10.0.19045
    CPU: (8) x64 Intel(R) Core(TM) i5-9300H CPU @ 2.40GHz
    Memory: 9.27 GB / 15.92 GB
  Binaries:
    Node: 18.16.0 - D:\Program Files\NodeJS\node.EXE
    npm: 9.6.4 - D:\Program Files\NodeJS\npm.CMD
  Browsers:
    Edge: Spartan (44.19041.1266.0), Chromium (112.0.1722.68)
    Internet Explorer: 11.0.19041.1566
  npmPackages:
    vitepress: latest => 1.0.0-alpha.75

Additional context

No response

Validations

• Check if you're on the latest VitePress version.
• Follow our Code of Conduct
• Read the docs.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.

[brc-dd]

This actually depends on how you're serving your site. Like if you open https://vitepress.dev/GUIDE/GETTING-STARTED, it would work fine too -- Netlify handles the normalization automatically. And it's working on dev because you're on Windows. On case-sensitive file systems like linux or webcontainers, mismatched case in urls won't work in dev too.

And I'm not sure if we should fix this. This was intentionally done in Vite because many folks deploy on Linux but use Windows or macOS for development. There was inconsistency between local preview and final deploy because of that. Refer vitejs/vite#10475