🐛 修复重复发送消息给llm的问题

nonebot_plugin_llmchat/mcpclient.py

@@ -1,5 +1,5 @@
-from contextlib import AsyncExitStack
 import asyncio
+from contextlib import AsyncExitStack
 
 from mcp import ClientSession, StdioServerParameters
 from mcp.client.sse import sse_client
@@ -66,9 +66,7 @@ class MCPClient:
         logger.info(f"正在服务器[{server_name}]上调用工具[{real_tool_name}]")
         session = self.sessions[server_name]
         try:
-            response = await asyncio.wait_for(
-                session.call_tool(real_tool_name, tool_args), timeout=10
-            )
+            response = await asyncio.wait_for(session.call_tool(real_tool_name, tool_args), timeout=10)
         except asyncio.TimeoutError:
             logger.error(f"调用工具[{real_tool_name}]超时")
             return f"调用工具[{real_tool_name}]超时"