Update packages/google-cloud-bigtable/google/cloud/bigtable/data/_async/client.py

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

Author: anvitTawar

packages/google-cloud-bigtable/google/cloud/bigtable/data/_async/client.py

@@ -1447,7 +1447,7 @@ async def execute_rpc():
                 results = await self.client._gapic_client.sample_row_keys(
                     request=SampleRowKeysRequest(
                         app_profile_id=self.app_profile_id,
-                        row_range=row_range._to_pb() if row_range else None,
+                        row_range=row_range._to_pb() if row_range is not None else None,
                         **self._request_path
                     ),
                     timeout=next(attempt_timeout_gen),