[BUG] Kafka Producer Callback releases events incorrectly

[kkondaka]

Describe the bug
The following code - has a bug about releasing event handles without trying to push the events to DLQ first.

https://github.com/opensearch-project/data-prepper/blob/main/data-prepper-plugins/kafka-plugins/src/main/java/org/opensearch/dataprepper/plugins/kafka/producer/KafkaCustomProducer.java#L198-L210

It should be fixed such a way that - if DLQ is not configured or DLQ push fails, events should be released with negative ack, otherwise they should be released with positive ack

To Reproduce
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Expected behavior
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Environment (please complete the following information):

• OS: [e.g. Ubuntu 20.04 LTS]
• Version [e.g. 22]

Additional context
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