PHOENIX-7755 Add support for Consistency Point calculation in Replication Log Replay on StandBy Cluster #2356
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Definition of consistency point - https://docs.google.com/document/d/1usap8PCYFU0Z4orznUPvk0tnSv0X-vnbgD_QZejrnv0/edit?tab=t.0#bookmark=id.c1dczn86acar
Note: The lastRoundInSync & lastRoundProcessed are already initialized based on cluster state, i.e. (DEGRADED / sync replication) when RS starts (code reference) - including fetching the last round in sync from HA Store if cluster is in DEGRADED state.