`gh pr list` doesn't write output anywhere if stdout or stderr is piped

### Describe the bug

When you pipe the stdout or stderr of `gh` somewhere, it no longer writes useful output to the stderr.

### Steps to reproduce the behavior

```console
❯ gh pr list
X No default remote repository has been set for this directory.

please run `gh repo set-default` to select a default remote repository.

❯ gh pr list | cat

❯
```

Using latest brew gh version:

```console
❯ gh --version
gh version 2.50.0 (2024-05-29)
https://github.com/cli/cli/releases/tag/v2.50.0
```

### Expected vs actual behavior

I expect to see the error on the stderr even when I save the output on the stdout.