Autocomplete not working only for AWS CLI

### Checks

- [x] I have searched [github.com/aws/amazon-q-developer-cli/issues](https://github.com/aws/amazon-q-developer-cli/issues?q=) and there are no duplicates of my issue

### Operating system

macOS 15.4.1 (24E263)

### Expected behaviour

The autocomplete popup will appear when I press space after typing `aws` in my terminal

### Actual behaviour

The autocomplete popup does not appear.

If I type `gh`, then the autocomplete popup appears when I press space, as expected.

I've tried:
- Running `q doctor`:
```
➜ ~ q doctor

● Inline is disabled, to re-enable run: q inline enable
✔ Everything looks good!

Amazon Q still not working? Run q issue to let us know!
```

- Run `q restart`
- Restarting my terminal (iTerm2)
- Restarting my computer
- Uninstall/reinstall Amazon Q

Video of reproduction:
https://github.com/user-attachments/assets/99c4f709-83f2-4227-a173-62d66b29d7fd

### Steps to reproduce

1. Open a terminal and type `gh` followed by a space: The autocomplete popup appears
2. Repeat step 1 but with `aws`: The autocomplete popup does not appear

Commencez par reproduire la différence entre saisir `gh` et `aws` suivis d’un espace dans le terminal, puis suivez la gestion de l’autocomplétion du dépôt pour ces commandes. Utilisez l’environnement macOS 15.4.1 et iTerm2 indiqué, et vérifiez que la fenêtre contextuelle d’autocomplétion apparaît pour `aws` sans perturber le comportement existant de `gh`.

Rédigé par le modèle d'indexation à partir du texte de l'issue.