o3-deep-research expires without reason

- **Package Name**: "azure-ai-projects>=1.0.0b12",
- **Package Version**: "azure-ai-projects>=1.0.0b12",
- **Operating System**: Windows 11
- **Python Version**: 3.12

**Describe the bug**
The deep research agent unexpectedly fails sometimes with `run.status` as `expired`. There's no way to extend the expiration period. `run.last_error`, `run.incomplete_details`, `run.expires_at`, `run.cancelled_at`, `run.failed_at` are all blank, so there's no information about the problem so that I can fix it.

**To Reproduce**
Not reproducible; seems to happen if the deep research runs too long. Using the started code give [here](https://learn.microsoft.com/en-us/azure/ai-foundry/agents/how-to/tools/deep-research-samples?pivots=python).

**Expected behavior**
Deep research completed successfully, provides information about why it expired, and ideally, provide a way to avoid the expiration when a long deep research run is expected.

**Screenshots**
N/A

**Additional context**
N/A

Comienza con el ejemplo de deep research enlazado en el issue e inspecciona cómo azure-ai-projects informa de una ejecución expirada, incluidos los campos de estado y error indicados. Se considera terminado determinar si el SDK o el servicio pueden exponer un motivo o ampliar el periodo de expiración, con una prueba reproducible o una limitación del servicio documentada.

Escrito por el modelo de indexación a partir del texto del issue.