Use uv automatically when running maturin develop inside a uv-created venv

[messense]

Closes #2432

[messense]

This change is part of the following stack:

• Use uv automatically when running maturin develop inside a uv-created venv #2433 ◀

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src/develop.rs:438

• Potential silent error handling. If uv is not specified and an error occurs, it is ignored. Consider making this behavior explicit or documenting it clearly.

if uv { Some(Err(e)) } else { None }