Do not filter out the usage updates. (#39381)

* Allow usage updates

* Add changelog entry

* Fix typo in CHANGELOG.md

Author: nick863

sdk/ai/azure-ai-inference/CHANGELOG.md

@@ -8,6 +8,8 @@
 
 ### Bugs Fixed
 
+* Fix a bug that caused filtering of a package with token usage from Azure OpenAI models in the streaming mode.
+
 ## 1.0.0b7 (2025-01-15)
 
 ### Features Added

sdk/ai/azure-ai-inference/azure/ai/inference/models/_patch.py

@@ -378,7 +378,7 @@ def _deserialize_and_add_to_queue(self, element: bytes) -> bool:
 
             # We skip any update that has a None or empty choices list
             # (this is what OpenAI Python SDK does)
-            if update.choices:
+            if update.choices or update.usage:
 
                 # We update all empty content strings to None
                 # (this is what OpenAI Python SDK does)