Batch analysis result not retrievable

- **Package Name**: azure-ai-documentintelligence
- **Package Version**: 1.0.2
- **Operating System**: Windows 10
- **Python Version**: 3.13.11

**Describe the bug**
I tried following the sample tutorials [sample_analyze_batch_documents.py](https://github.com/Azure/azure-sdk-for-python/blob/d47bfafcc4f72d08911f87f0ab34b57f5cdc72f4/sdk/documentintelligence/azure-ai-documentintelligence/samples/sample_analyze_batch_documents.py#L48) and [sample_analyze_batch_documents_async.py](https://github.com/Azure/azure-sdk-for-python/blob/d47bfafcc4f72d08911f87f0ab34b57f5cdc72f4/sdk/documentintelligence/azure-ai-documentintelligence/samples/async_samples/sample_analyze_batch_documents_async.py#L49), and in both cases, the mechanism to verify whether the operation is concluded does not work.
Specifically, I always get the message "The batch analyze is still in process..." even when I know for a fact that the analysis has concluded.

I also tried implementing a solution by using the method [add_done_callback](https://learn.microsoft.com/en-us/python/api/azure-core/azure.core.polling.lropoller?view=azure-python#azure-core-polling-lropoller-add-done-callback) but this also does not work. Unfortunately, there is no sample that illustrates the correct use of this method to monitor a batch analysis.

**To Reproduce**
Steps to reproduce the behavior:
1. run the samples.

**Expected behavior**
The prints should reflect the status of the batch analysis operation.

Start by running sample_analyze_batch_documents.py and async_samples/sample_analyze_batch_documents_async.py in the azure-ai-documentintelligence package, focusing on how completion status is checked. Read the LROPoller add_done_callback entry point mentioned in the report and compare its behavior with the samples. Done means the samples and callback path accurately reflect when batch analysis has completed.

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