`Enable ligatures in code` option is not respected in diff viewer

### Describe the bug

<img width="673" height="72" alt="Image" src="https://github.com/user-attachments/assets/1f20581d-f308-425a-877d-130bcd26500e" />

<img width="604" height="197" alt="Image" src="https://github.com/user-attachments/assets/05a5cc26-9a40-4c38-8c4e-80d762eed047" />

### Additional context

_No response_

### Logs

```shell-script

```