[KafkaConfigBuilder](https://github.com/helidon-io/helidon/blob/helidon-3.x/messaging/connectors/kafka/src/main/java/io/helidon/messaging/connectors/kafka/KafkaConfigBuilder.java) is missing Configured annotations. It also is missing a Config section in the [Kafka Connector](https://helidon.io/docs/v3/#/mp/reactivemessaging/kafka) documentation `AqConfigBuilder` and `JmsConfigBuilder` might have the same problem.