LeadershipTransferAbandoned
data class LeadershipTransferAbandoned(val clock: Long, val leader: NodeId, val target: NodeId, val reason: LeadershipTransferAbandonReason) : RaftTraceEvent
A leadership transfer was abandoned — either because the auto-timeout expired before the target won an election, or because RaftNode.cancelTransfer was called explicitly. reason describes which path fired. Normal proposal acceptance is resumed.