Kafka Producer Processors do not route in failure queue on timeout

Hi,

the Kafka producer processors do not route the FlowFiles on a timeout e.g. into the failure connection. They are yielded in the incomming connection. 

You can see the behaviour here e.g.:
https://stackoverflow.com/questions/71460008/apache-nifi-publishkafka-timeout-exception

I think this is a design flaw. I have a use case where messages should be dropped after a specific configurable time. If the messages are yielded in the incomming queue they are always published when the kafka broker are available again. I know I can set the expiration time in secs or mins in the incomming queue but it is not dynamically configurable because no attributes are allowed. 

Best

Denis