[Bug]: Rsbuild will run twice due to output.copy setting in dev mode.

[xbzhang2020]

Version

System:
    OS: macOS 14.6.1
    CPU: (12) x64 Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz
    Memory: 154.31 MB / 16.00 GB
    Shell: 5.9 - /bin/zsh
  Browsers:
    Chrome: 131.0.6778.109
    Safari: 17.6

Details

When starting the example of output.copy in dev mode, I found that Rsbuild ran twice.

But if I modify the code { from: './src/assets' } to { from: 'src/assets' }, Rsbuild will run correctly.

The problem may be caused by rspack.CopyRspackPlugin. Because Rspack has the same problem in dev mode.

Reproduce link

https://rsbuild.dev/config/output/copy#example

Reproduce Steps

1. Copy the code from the example.

// rsbuild.config.js
export default {
  output: {
    copy: [
      { from: './src/assets' },
    ],
  },
};

2. Run npm run dev.