顺序启动节点导致 rmqtt-cluster-raft peers 列表缺失首个节点，需重启后才补全 #331
Description
在 rmqtt 集群（启用 rmqtt-cluster-raft 插件）启动时如果不使用docker compose up -d同时启动，而是按顺序 docker compose up -d rmqtt1 → rmqtt2 → rmqtt3 启动，会导致 peers 列表缺失首个已启动节点，需重启该节点才能补全。
期望行为：
后续节点上线后，节点列表包含当前全部已上线节点，最终显示全部集群成员（无需重启）。
实际行为：
在2,3节点上线后 /api/v1/plugins/1/rmqtt-cluster-raft 中 peers 只显示 2,3 不含 1。
重现步骤：
使用readme中的docker compose template 将command进行如下修改
xxx
command: ["--id","1","--plugins-default-startups","rmqtt-cluster-raft","--node-grpc-addrs","1@rmqtt1:5363","2@rmqtt2:5363","3@rmqtt3:5363","--raft-peer-addrs","1@rmqtt1:6003","2@rmqtt2:6003","3@rmqtt3:6003"]
xxx
command: ["--id","2","--plugins-default-startups","rmqtt-cluster-raft","--node-grpc-addrs","1@rmqtt1:5363","2@rmqtt2:5363","3@rmqtt3:5363","--raft-peer-addrs","1@rmqtt1:6003","2@rmqtt2:6003","3@rmqtt3:6003"]
xxx
command: ["--id","3","--plugins-default-startups","rmqtt-cluster-raft","--node-grpc-addrs","1@rmqtt1:5363","2@rmqtt2:5363","3@rmqtt3:5363","--raft-peer-addrs","1@rmqtt1:6003","2@rmqtt2:6003","3@rmqtt3:6003"]
xxx# 顺序启动
docker compose up -d rmqtt1
docker compose up -d rmqtt2
docker compose up -d rmqtt3
# 查询当前信息
curl "http://127.0.0.1:6064/api/v1/plugins/1/rmqtt-cluster-raft"此时可见如下回显
重启rmqtt1对应的docker后peers列表变为3个节点 docker restart rmqtt1
