Reproduction link or steps

Minimal example: https://github.com/mmalinin/rolldown_custom_cli_args

What is expected?

CLI build command completes successfully and prints custom args

{
  _: [],
  c: 'rollup.config.js',
  config: 'rollup.config.js',
  configLogLevel: 'silent',
  config_my_arg: true
} object

What is actually happening?

CLI build command terminates with an error:
ERROR Invalid option: --configLogLevel. We will ignore this option.

System Info

Binaries:
    Node: 22.19.0 - C:\Program Files\nodejs\node.EXE
    npm: 10.9.3 - C:\Program Files\nodejs\npm.CMD

Any additional comments?

No response