KafkaOperations is missing nullable annotations

[gbaso]

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In what version(s) of Spring for Apache Kafka are you seeing this issue?

3.3.3

Describe the bug

KafkaOperations is in a package annotated with @NonNullApi, therefore all method parameters are considered non-nullable, unless annotated differently. KafkaOperations does not have any nullability annotations, despite the data to send being @Nullable in KafkaTemplate.

Expected behavior

KafkaOperations should have nullability annotations similar to KafkaTemplate.