fix(cli): conflict --locked with --upgrade

[mkniewallner]

Summary

Relates to #10273.

This doesn't solve what is highlighted in #10273 (comment), but I believe this is still an improvement for users not setting upgrade = true in [tool.uv].

Test Plan

Ran commands locally:

$ cargo run --quiet -- lock --locked --upgrade
error: the argument '--check' cannot be used with '--upgrade'

Usage: uv lock --check

For more information, try '--help'.