Enable install audits without resolving named requirements (#2575)
## Summary
This PR ensures that if a package is already satisfied by the current
environment, we don't bother resolving the named requirement.
Part of: https://github.com/astral-sh/uv/issues/313.
## Test Plan
- `cargo run pip install ./scripts/editable-installs/black_editable`
- `cargo run pip install black --verbose`
