On startup logs are replayed that are prior to hardstate commit

[Licenser]

Describe the bug
When a raft-rs is initialised with a hard and config state it crashes when trying to replay already applied logs. Since raft logs are not treated as idempotent their re-application fails and crashes raft-rs.

To Reproduce

See #314

Expected behavior
Either: logs prior to the hardstate commit index are not replayed.
Or: raft logs are treated as idempotent and replaying them will have no effect

[Licenser]

Any thoughts on this?