[ABW]: skip processing effective_comment_vote_operation in context of post if...

[ABW]: skip processing effective_comment_vote_operation in context of post if end of massive sync is past cashout date for target post (optimization)

The effects of that optimization cut number of post records to flush by more than half, it is also visible in related vacuum times, however the impact on overall performance is minuscule.
It most likely means that Hivemind now waits more, meaning we won't see full impact of the optimization until we optimize all other parts.