Once a member is removed from the cluster, its endpoint should no longer exist in the health checker.
This PR adds a check to prevent the removed endpoint from being evicted again unexpectedly.
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- ~~[OWNERS](https://github.com/tikv/pd/blob/release-8.1/OWNERS)~~ [JmPotato]
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This is an automated cherry-pick of #8287
What problem does this PR solve?
Issue Number: close #8286.
What is changed and how does it work?
Check List
Tests
Release note