- Updated import statements in chat_utils.py to replace the internal content format type with the public one for better clarity. - Refactored api_server.py to streamline the chat template loading process by replacing the previous method with a direct function call. - Enhanced serving_chat.py by reintroducing safe_apply_chat_template functions for better template handling. Signed-off-by: tzhouam <tzhouam@connect.ust.hk>