When git commands (push, pull, hooks...) produce output containing ANSI
escape sequences for colors or formatting, Zed was displaying them as
raw escape codes in the output buffer, making the output hard to read.
This simply escapes ANSI from the git output

### Before and After

  <table>
    <tr>
      <th align="center">Before</th>
<th align="center">After</th>
    </tr>
    <tr>
  <td>
<img width="882" height="862" alt="Screenshot 2026-04-08 at 21 13 07"
src="https://github.com/user-attachments/assets/58731e80-d864-47ca-8983-d0e86e924843"
/>
</td>
      <td>
<img width="882" height="862" alt="Screenshot 2026-04-08 at 21 15 14"
src="https://github.com/user-attachments/assets/7649200a-2d82-4442-88da-e231304911a8"
/>
</td>
    </tr>         
  </table>        

Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [ ] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

Related to #43817. This PR only addresses the escaping of the ANSI
codes; colors and other stuff are not handled

Release Notes:

- Fixed ANSI escape codes being displayed as raw text in git command
output