`nuxi module add` always install module as dependcies, even it should be `devDependencies`

For example, when I install `@nuxt/eslint`, for pnpm, I will install `eslint` and `@nuxt/eslint` as `devDepencies`:

``` shell
pnpm add -D @nuxt/eslint eslint
```

But when I use `nuxi module add eslint`, it runs:

``` shell
pnpm add @nuxt/eslint // didn't have eslint
```