infrastructure-vector-store-integra-opensearchvectorstore-deletion-deletes-by-internal-6b2eaa50

THEN Replace the broken `delete_doc_id` call with a custom delete using `self._os_client.delete_by_query` that matches on the `doc_id` field. For Amazon OpenSearch Serverless (AOSS), which does not support `delete_by_query`, implement a workaround such as retrieving the document's internal ID first or using a client-side filter.

```python
# Instead of self._os_client.delete(index=self._index, id=doc_id)
# Use delete_by_query:
self._os_client.delete_by_query(index=self._index, body={'query': {'term': {'doc_id': doc_id}}})
```