Bug: Cannot clone repo: remote authentication required but no callback set

### Description

When cloning a repo i get this message (title).

I am logged in to GitHub and the setting screen shows the "Logout" button. I even tried logging in again. The feature worked before the latest update.

### Steps To Reproduce

1. Try cloning

### Files Version

4.1.3.0

### Windows Version

10.0.26200.8655

### User ID

75f6d60a-8d59-47f1-8dba-1608e10824b5

### Log File

[debug.log](https://github.com/user-attachments/files/29357419/debug.log)

Start by reviewing the attached debug.log and reproducing cloning in Files 4.1.3.0 on Windows 10 with a GitHub account that shows as logged in. Trace the clone authentication flow from the reported error, then verify that cloning succeeds without requiring another login callback.

Written by the indexing model from the issue text.