Types files have capitals in them, leading to them being unreferenceable downstream

[Princesseuh]

Describe the bug

TypeScript has a long-standing issue where files with capitals in them cannot be referenced in triple slashes directives on certain OSes: microsoft/TypeScript#45096. Unfortunately, this mean that downstream frameworks like Astro who cannot use Vite's client types (due to conflicting declarations) cannot re-use Vite's types for import.meta. (though this issue also applies to the other types). In Astro especially, this has lead us to having to maintain a copy of the import meta types: https://github.com/withastro/astro/blob/main/packages/astro/import-meta.d.ts

I sent a PR to fix this a long time ago: #9827, but it was refused and superseded by another PR that ended up getting reverted. Getting us back to square one, ha!

Reproduction

N/A

Steps to reproduce

• Try to refer to Vite's types using a triple slash directive: /// <reference types="vite/types/importMeta" />
• Doesn't work on Linux! (maybe on macOS too? Not sure.)

System Info

System:
    OS: macOS 13.1
    CPU: (8) arm64 Apple M1 Pro
    Memory: 127.70 MB / 16.00 GB
    Shell: 3.6.1 - /opt/homebrew/bin/fish
  Binaries:
    Node: 19.9.0 - /opt/homebrew/bin/node
    Yarn: 1.22.19 - /opt/homebrew/bin/yarn
    npm: 9.6.3 - /opt/homebrew/bin/npm
  Browsers:
    Chrome: 113.0.5672.126
    Firefox: 111.0.1
    Safari: 16.2

Used Package Manager

pnpm

Logs

No response

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