fix: change auto generate se namespace to mcp (#2398)

registry/nacos/mcpserver/watcher.go

@@ -377,7 +377,7 @@ func (w *watcher) processServerConfig(dataId string, services *model.Service, mc
 			Meta: config.Meta{
 				GroupVersionKind: gvk.ServiceEntry,
 				Name:             fmt.Sprintf("%s-%s", provider.IstioMcpAutoGeneratedSeName, strings.TrimSuffix(dataId, ".json")),
-				Namespace:        w.namespace,
+				Namespace:        "mcp",
 			},
 			Spec: serviceEntry,
 		}