修复群头衔更改通知报错

[MrXiaoM]

QQ版本：8.9.80.12440

报错如下，原因是 [1, 3, 2, 5] 为 ProtoList 而非 ProtoMap，导致在获取 targetUin，asLong 时出现未预料的错误

WARN onMsgPush(msgType: 732, subType: 16): java.lang.ClassCastException: moe.fuqiuluo.proto.ProtoList cannot be cast to moe.fuqiuluo.proto.ProtoNumber

pb.toJson()

{
    "1": {
        "1": {
            // ...
        },
        "2": {
            // ...
        },
        "3": {
            "1": {},
            "2": {
                "13": 6,
                "4": 1919810, // groupId
                "5": [
                    74439140803724111,
                    {
                        "2": "xxxxxxxxxxxxxxxxxxx", // titleChangeInfo
                        "3": 1,
                        "5": 114514// targetUin
                    }
                ]
            }
        }
    }
}