Feat: hide usage-statistics and service-ping in admin settings

What does this MR do and why?

Relate to https://jihulab.com/gitlab-cn/gitlab/-/issues/3246

Link backend mr !1855 (merged)

hidden Service Ping and Version check if jh_usage_statistics disable

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Before	After

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

Feature.disable(:jh_usage_statistics)

MR acceptance checklist

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• I have evaluated the MR acceptance checklist for this MR.