在k8s部署emqx 预设认证数据没有生效

File: [/zh_CN/advanced/auth-mnesia.md](https://docs.emqx.cn/broker/v4.3/advanced/auth-mnesia.html)

这是pod里的输出
```shell
bash-5.0$ cat /etc/plugins/emqx_auth_mnesia.conf
## clientid 认证数据
auth.client.1.clientid = admin
auth.client.1.password = public

## username 认证数据
auth.user.2.username = admin
auth.user.2.password = public
```
已经启用了认证

Start with zh_CN/advanced/auth-mnesia.md and compare its documented authentication configuration with the Kubernetes deployment described in the issue. Reproduce the configuration and inspect the pod output; the work is done when the documentation accurately explains or corrects how the preset authentication data should take effect.

Written by the indexing model from the issue text.