ucode configure crashes with uv installed with homebrew

## Repro steps

- Install uv with Homebrew
- Run ucode configure ...

```
Running `ucode configure --workspaces ...`...
error: Could not find the `uv` binary at either of:
  /Users/tomu.hirata/.local/bin/uv
  /Users/tomu.hirata/.local/bin/uv
Error: `ucode configure` exited with code 2; see the command output above for details.
```