Backport improved replication logic (v13.12)

Merged Patrick Steinhardt requested to merge pks-coordinator-replication-v13.12 into 13-12-stable

Backport improved replication logic so that we do not have to create replication jobs in some edgecases anymore:

  • If a transaction was created on secondaries, but the primary dropped out before voting.
  • If there were no transactions and the primary errored out early.
  • If nodes committed transactions, but failed with the same error as the primary.

This also backports a new metric which allows us to easily deduce why replication jobs have been created for improved debugging and monitoring capabitilities.