Popup HTML auto refresh does not work with Vite 6.0.9+

Describe the bug

Due to a security issue (https://github.com/vitejs/vite/security/advisories/GHSA-vg6x-rcgg-rjx6), Vite 6.0.9+ now requires a token to connect to the WebSocket endpoint.
Because WXT connects to the WS server on its own, this connection no longer successes.
https://github.com/wxt-dev/wxt/blob/7c18d9c0b8c638204b913b13de25c08ced5d9eb5/packages/wxt/src/sandbox/dev-server-websocket.ts#L43-L46

The way to fix would be to pass config.webSocketToken as a query param (e.g. ?token=${config.webSocketToken}) when connecting to WS server.
https://github.com/vitejs/vite/blob/9654348258eaa0883171533a2b74b4e2825f5fb6/packages/vite/src/node/config.ts#L610-L620
But ideally, it should not connect to the WebSocket server on its own and instead use import.meta.hot.

Reproduction

pnpm dlx wxt@latest init

Steps to reproduce

1. pnpm dlx wxt@latest init
2. pnpm dev
3. Open the extension popup.
4. Edit entrypoints/popup/index.html

System Info

System:
    OS: Windows 11 10.0.22631
    CPU: (24) x64 AMD Ryzen 9 5900X 12-Core Processor
    Memory: 11.03 GB / 31.92 GB
  Binaries:
    Node: 22.13.0 - C:\Program Files\nodejs\node.EXE
    npm: 10.9.2 - C:\Program Files\nodejs\npm.CMD
    pnpm: 9.15.3 - C:\Program Files\nodejs\pnpm.CMD
    bun: 1.1.38 - ~\AppData\Local\Microsoft\WinGet\Links\bun.EXE
  Browsers:
    Edge: Chromium (131.0.2903.99)
    Internet Explorer: 11.0.22621.3527

Used Package Manager

pnpm

Validations

• 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.
• Check that this is a concrete bug. For Q&A open a GitHub Discussion or join our Discord Chat Server.
• The provided reproduction is a minimal reproducible example of the bug.

Start with packages/wxt/src/sandbox/dev-server-websocket.ts at the WebSocket connection referenced in the issue, then reproduce with pnpm dlx wxt@latest init, pnpm dev, and an edit to entrypoints/popup/index.html. Compare the connection requirements in Vite's config and verify that popup HTML auto-refresh works with Vite 6.0.9+.