Umi presets配置问题

[DroganC]

三方包导出

export default ()=>{
      return {
            plugins:[]
    }
}

umi/config里引入

{
...,
presets:['@npm/plugins']
}

报错：key plugins is already registered by xxxxx， plugin from undefined register failed.

但是本地工程这么写是可以的

[fz6m]

See #11872