refactor(models/events): 为所有事件类添加kw_only参数

统一为所有dataclass装饰的事件类添加kw_only=True参数，确保实例化时必须使用关键字参数

models/events/message.py

@@ -34,7 +34,7 @@ MESSAGE_EVENT_OP = Permission.OP
 MESSAGE_EVENT_USER = Permission.USER
 
 
-@dataclass(slots=True)
+@dataclass(slots=True, kw_only=True)
 class MessageEvent(OneBotEvent):
     """
     消息事件基类
@@ -87,7 +87,7 @@ class MessageEvent(OneBotEvent):
         raise NotImplementedError("reply method must be implemented by subclasses")
 
 
-@dataclass(slots=True)
+@dataclass(slots=True, kw_only=True)
 class PrivateMessageEvent(MessageEvent):
     """
     私聊消息事件
@@ -105,7 +105,7 @@ class PrivateMessageEvent(MessageEvent):
         )
 
 
-@dataclass(slots=True)
+@dataclass(slots=True, kw_only=True)
 class GroupMessageEvent(MessageEvent):
     """
     群聊消息事件