nacos register race bug,See below for details #137
Description
https://github.com/go-micro/plugins/blob/main/v4/registry/nacos/watcher.go callBackHandle . the line 86，98，121 should add read lock.
{{ message }}
https://github.com/go-micro/plugins/blob/main/v4/registry/nacos/watcher.go callBackHandle . the line 86，98，121 should add read lock.