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

[jioce]

trafficstars

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

[jioce]

issue is still exist

version used kubesphere: v3.3.0-rc.2

[weili520]

/assign

[harrisonliu5]

/kind need-to-verify

[jioce]

issue is still exist in ks v3.3.1-rc.0