Modified `wxt.config` via `wxt.hook` is reset on dev reloaded

[1natsu172]

Describe the bug

There is a bug that causes wxt.config modified via hook to be reset. I'm modifying the outDir, but the path is broken. The path is correct at startup dev, but the reset when the HMR reloads. This is causing content-script to not reload.

It can be reproduced with the example of separating outDir from dev and prod written in docs - https://wxt.dev/guide/go-further/reusable-modules.html#actually-doing-something.

This is similar to this #863 . Perhaps the cause may be the same.

Reproduction

https://github.com/wxt-dev/wxt/compare/main...1natsu172:repro-weired-ourDir-path

Steps to reproduce

cd packages/wxt-demo
pnpm dev
# save something content-script file.

System Info

System:
    OS: macOS 14.6.1
    CPU: (8) arm64 Apple M1
    Memory: 178.72 MB / 8.00 GB
    Shell: 3.7.0 - /opt/homebrew/bin/fish
  Binaries:
    Node: 22.7.0 - ~/.asdf/installs/nodejs/22.7.0/bin/node
    npm: 10.8.2 - ~/.asdf/plugins/nodejs/shims/npm
    pnpm: 9.6.0 - ~/.asdf/installs/nodejs/22.7.0/bin/pnpm
    bun: 1.1.25 - ~/.asdf/shims/bun
    Watchman: 2024.04.22.00 - /opt/homebrew/bin/watchman
  Browsers:
    Brave Browser: 111.1.49.120
    Chrome: 128.0.6613.85
    Safari: 17.6
  npmPackages:
    wxt: workspace:* => 0.19.7

Used Package Manager

pnpm

Validations

• [X] Read the Contributing Guidelines.
• [X] Read the docs.
• [X] Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• [X] Check that this is a concrete bug. For Q&A open a GitHub Discussion or join our Discord Chat Server.
• [X] The provided reproduction is a minimal reproducible example of the bug.