emqx/changes/ee/fix-13079.en.md

Improve Kafka producer error handling for message_too_large.

Prior to this change, Kafka producers would retry sending oversized batches (message_too_large error) in hopes of a server side configuration fix (max.message.bytes).

Now, oversized messages are automatically split into single-message batches for retry. If a message still exceeds size limits, it will be dropped to maintain data flow.