Omit interpreter path during `uv venv` with managed Python (#5311)
e.g.
```
❯ cargo run -q -- venv --preview
Using Python 3.12.1
Creating virtualenv at: .venv
Activate with: source .venv/bin/activate
```
instead of
```
❯ cargo run -q -- venv --preview
Using Python 3.12.1 interpreter at: /Users/zb/Library/Application Support/uv/python/cpython-3.12.1-macos-aarch64-none/bin/python3
Creating virtualenv at: .venv
Activate with: source .venv/bin/activate
```
