Creating or deleting an .env file does not restart the dev server

[Rich-Harris]

Describe the bug

Editing an .env file causes the dev server to restart. But creating one, or deleting it, does not. In some cases this necessitates hacky workarounds like https://github.com/sveltejs/learn.svelte.dev/pull/207/files.

Reproduction

https://github.com/Rich-Harris/vite-env-reload

Steps to reproduce

Follow the instructions in the repro README

System Info

System:
    OS: macOS 12.6.3
    CPU: (10) arm64 Apple M1 Max
    Memory: 118.83 MB / 32.00 GB
    Shell: 5.8.1 - /bin/zsh
  Binaries:
    Node: 16.17.0 - ~/.nvm/versions/node/v16.17.0/bin/node
    Yarn: 1.22.19 - ~/.nvm/versions/node/v16.17.0/bin/yarn
    npm: 8.15.0 - ~/.nvm/versions/node/v16.17.0/bin/npm
  Browsers:
    Chrome: 110.0.5481.100
    Chrome Canary: 112.0.5607.0
    Firefox: 110.0
    Safari: 15.6.1
  npmPackages:
    vite: ^4.1.3 => 4.1.3

Used Package Manager

pnpm

Logs

No response

Validations

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• Read the Contributing Guidelines.
• Read the docs.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
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• The provided reproduction is a minimal reproducible example of the bug.