Complete package name for "uv remove" (#1072)

![image](https://github.com/user-attachments/assets/7653d26b-665f-4caa-a764-0f83b41f5519)

Drawback:

The flags of "uv remove" command are no longer completed after I add
competer like this:

```nu
  export extern "uv remove" [
    --no-config
    --help(-h)
    --version(-V)
    ...packages: string@"nu-complete uv packages"
  ]
```

I have no solution yet.

Author: hongquan