Add error log for client stdio

src/mcp/client/stdio/__init__.py

@@ -154,6 +154,7 @@ async def stdout_reader():
                         try:
                             message = types.JSONRPCMessage.model_validate_json(line)
                         except Exception as exc:
+                            logger.exception("Failed to parse JSONRPC message from server")
                             await read_stream_writer.send(exc)
                             continue