🐛 修复角色设置时的重置逻辑，确保角色变更后正确保存

Author: shadow3aaa

src/nonebot_plugin_nyaturingtest/session.py

@@ -148,9 +148,9 @@ def set_role(self, name: str, role: str):
         """
         设置角色
         """
+        self.reset()
         self.__role = role
         self.__name = name
-        self.reset()
         self.save_session()  # 保存角色设置变更
 
     def role(self) -> str: