Describe the bug

• Related fix(hmr): trigger prune event when import is removed from non hmr module #20768

For HMR, Vite removes styles using prune event, but this is currently triggered only when an import is removed from a module which has import.meta.hot.

This can causes an issue where style removal doesn't happen when modifying non-self-accepting module, for example:

app.jsx ->  dep2.js -> test.css

app.jsx : self accepting
dep2.js : not self accepting <- modifying this file to remove test.css import doesn't prune style

Reproduction

https://stackblitz.com/github/hi-ogawa/reproductions/tree/main/vite-prune-css?file=src%2Fdep2.js

Steps to reproduce

• open stackblitz
  • observe orange text
• comment out import "./test.css" from src/dep2.js
  • still text is orange
• reload window
  • now text is black

System Info

System:
    OS: Linux 5.0 undefined
    CPU: (8) x64 Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz
    Memory: 0 Bytes / 0 Bytes
    Shell: 1.0 - /bin/jsh
  Binaries:
    Node: 20.19.1 - /usr/local/bin/node
    Yarn: 1.22.19 - /usr/local/bin/yarn
    npm: 10.8.2 - /usr/local/bin/npm
    pnpm: 8.15.6 - /usr/local/bin/pnpm
  npmPackages:
    @vitejs/plugin-react: ^5.0.0 => 5.0.2 
    vite: ^7.1.2 => 7.1.5

Used Package Manager

pnpm

Logs

No response

Validations

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• The provided reproduction is a minimal reproducible example of the bug.