[Bug]: WARNING | _dashscope_formatter:_format:373 - Unsupported block type thinking in the message, skipped.

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**Describe the bug**
流式打印思考模式的ReActAgent时，报Unsupported block type thinking in the message, skipped.，导致当前thinking输出被中断，last提前为true。

**To Reproduce**
Steps to reproduce the behavior:

1.新创建一个ReActAgent，带思考模式，有个当前系统时间的工具，
2.采用stream_printing_messages函数进行流式打印的时候
3.注册工具：toolkit.register_tool_function(cur_datetime)
def cur_datetime():
"""{当前系统时间函数}"""
return ToolResponse(content=[TextBlock(type="text", text=f"当前时间：{datetime.now().strftime('%Y-%m-%d %H:%M:%S')}，地理位置：中国",),],)

**Expected behavior**
当前thinking输出被中断，last提前为true。之后输出一次新的thinking过程并完整打印思考过程。

**Error messages**
Detailed error messages.

**Environment (please complete the following information):**

- AgentScope Version: [1.0.9]
- Python Version: [3.9]
- OS: [windows]

**Additional context**
Add any other context about the problem here.