grafana-overview-dashboard: update the monitoring item for CPS (#6754)

[ti-chi-bot]

This is an automated cherry-pick of #6754

What is changed, added or deleted? (Required)

Fixed the issue reported in https://asktug.com/t/topic/95634

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[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• qiancai

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[qiancai]

LGTM

[qiancai]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Details

Commit hash: 99c1ab5