fix: qwen fc error (#6620)

Co-authored-by: dufei <du_fei@venusgroup.com.cn>

api/core/model_runtime/model_providers/tongyi/llm/llm.py

             raise ValueError(f"Got unknown type {message}")
 
         return message_text
-    
+
     def _convert_messages_to_prompt(self, messages: list[PromptMessage]) -> str:
         """
         Format a list of messages into a full prompt for the Anthropic model
                 tongyi_messages.append({
                     'role': 'assistant',
                     'content': content if not rich_content else [{"text": content}],
+                    'tool_calls': [tool_call.model_dump() for tool_call in
+                                   prompt_message.tool_calls] if prompt_message.tool_calls else []
+
                 })
             elif isinstance(prompt_message, ToolPromptMessage):
                 tongyi_messages.append({