refac

Co-Authored-By: Classic298 <27028174+Classic298@users.noreply.github.com>

backend/open_webui/utils/payload.py

@@ -286,6 +286,8 @@ def convert_messages_openai_to_ollama(messages: list[dict]) -> list[dict]:
         # may be injected by filter inlet functions).
         if 'thinking' in message:
             new_message['thinking'] = message['thinking']
+        elif reasoning_content := (message.get('reasoning_content') or message.get('reasoning')):
+            new_message['thinking'] = reasoning_content
 
         content = message.get('content', [])
         tool_calls = message.get('tool_calls', None)