v4.4.1: Fix The path part doesn't show

🐛 The path part doesn't show

When git is missing from the system, we incorrectly aborted the whole prompt, and we even had a test case for that 😆
So now, we simply skip git-related features when it is missing and carry on (cf. #313).

👏 Thanks

• @w3ntao for raising #166

⬇️ Installation

fisher install pure-fish/pure