feat: Add enable config center button && fix: grpc connection leakage (#3036)

* feat: add enable config center

* fix: config

* fix: config

* fix: config

* fix: config

internal/msggateway/hub_server.go

@@ -16,9 +16,10 @@ package msggateway
 
 import (
 	"context"
-	"github.com/openimsdk/open-im-server/v3/pkg/rpcli"
 	"sync/atomic"
 
+	"github.com/openimsdk/open-im-server/v3/pkg/rpcli"
+
 	"github.com/openimsdk/open-im-server/v3/pkg/authverify"
 	"github.com/openimsdk/open-im-server/v3/pkg/common/servererrs"
 	"github.com/openimsdk/open-im-server/v3/pkg/common/startrpc"
@@ -64,6 +65,9 @@ func (s *Server) Start(ctx context.Context, index int, conf *Config) error {
 			conf.WebhooksConfig.GetConfigFileName(),
 			conf.RedisConfig.GetConfigFileName(),
 		},
+		[]string{
+			conf.Discovery.RpcService.MessageGateway,
+		},
 		s.InitServer,
 	)
 }