PR #106094 - kvserver: add raft.replication.latency histogram

[cockroach-teamcity]

Exalate commented:

Related PR: https://github.com/cockroachdb/cockroach/pull/106094 Commit: https://github.com/cockroachdb/cockroach/commit/848057113e9eb919cebdb4653c7ccc084aba8688 Epic: CRDB-25287

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Release note (ops change): a histogram metric raft.replication.latency was added. It tracks the time between evaluation and application of the command. This includes time spent in the quota pool, in replication (including reproposals) as well as log application, but notably not sequencing latency, i.e. contention and latch acquisition.

Jira Issue: DOC-8271