Add monitoring items to the custom monitoring panel, and the monitoring indicators display errors

Created by: jioce

Describe the bug 1、Create a custom monitor, enter the name "test", select Custom, and click Next 2、Click Add Monitoring Item, select Histogram, click OK, 3、Click to monitor metrics, show errors

Versions used(KubeSphere/Kubernetes) KubeSphere: v3.3.0-rc.1

/kind bug /priority low