fix: ensure room_id scope

[moushicheng]

Sometimes, the room_id exceeds the limit of 232. I originally intended to change the type of room_id, but since this type is already widely used throughout the system, it's difficult to modify. So, I changed it to 2100 to ensure that the room_id will never overflow.

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有时，room_id会超出2^32的上限，我本想修改roomid的类型但是该类型已经在系统内大量使用...不好修改，所以我改成了2^100，保证roomid永远不会炸