`BatchJobTerminateOptions` only available in private module.

- **Package Name**: azure-batch
- **Package Version**: 15.1.0
- **Operating System**: Ubuntu 24.04
- **Python Version**: 3.13.13

**Describe the bug**
`BatchClient.begin_terminate_job()` takes a `options: Optional[_models._models.BatchJobTerminateOptions] = None,` parameter. However `BatchJobTerminateOptions` is not re-exported in `azure.batch.models` unlike other model classes, so you have to import it from `azure.batch.models._models` which (following python convention) is a private module.

Presumably this is just a missing re-export in `azure/batch/models/__init__.py`.

**To Reproduce**
Steps to reproduce the behavior:
1. Install azure-batch 15.1.0
2. Try to import `BatchJobTerminateOptions`

**Expected behavior**
The `BatchJobTerminateOptions` type should be available in a public module.

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**Additional context**
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