Sync with system python broken in 0.4.13

[b-phi]

For some use cases, I had been using UV_PROJECT_ENVIRONMENT=/usr/local to sync with the system python based on this comment #6834 (comment). With 0.4.13, this now breaks with

Project virtual environment directory /usr/local/ cannot be used because it is not a virtual environment and is non-empty

Which was added in #7527.

I've looked through the docs, but can't find any official recommendation for what path to use to sync with the system python /usr/local/bin/python.

[zanieb]

Sorry about this. The problem is #7522

I have a fix up in #7585

[zanieb]

This will be fixed in the next release (sometime today)

New integration test in #7591

[b-phi]

Thank you!