fix(cli): conflict `--locked` with `--upgrade` (#10836)
## Summary
Relates to #10273.
This doesn't solve what is highlighted in
https://github.com/astral-sh/uv/issues/10273#issuecomment-2569515066,
but I believe this is still an improvement for users not setting
`upgrade = true` in `[tool.uv]`.
## Test Plan
Ran commands locally:
```shell
$ cargo run --quiet -- lock --locked --upgrade
error: the argument '--check' cannot be used with '--upgrade'
Usage: uv lock --check
For more information, try '--help'.
```
