[5.8][5.10][6.0] Update Kafka producer tooltips and add new v6 producer options

[Kinplemelon]

Summary

Keep the Dashboard configuration UI aligned with the Kafka producer schema and description changes in EMQX 5.8, 5.10, and v6.

Required changes

EMQX 5.8 and 5.10

• Update the max_linger_time tooltip for Kafka producer integrations to match the current producer behavior documented in docs(kafka): update max_linger descriptions for wolff 4.1.11 behavior emqx#18101.
• Apply the updated wording to Kafka, Confluent, and Azure Event Hubs producer forms where applicable.
• Sync the related max_linger_bytes description where it is exposed, since the reference PR updates both linger descriptions together.

EMQX v6

• Apply the same max_linger_time and related linger-description updates.
• Add/display the producer options introduced by feat(kafka): add max_batch_age and max_retries producer options (wolff 4.2.1) emqx#18085 for Kafka, Confluent, and Azure Event Hubs:
  • Action max_batch_age (default: infinity)
  • Action max_retries (default: infinity)
  • Action reconnect_delay (default: 2s)
  • Connector request_timeout (default: 30s)
• Add the corresponding labels/tooltips and place the fields in the appropriate connector/action forms.

Expected behavior

• Dashboard tooltips describe the restored max_linger_time behavior accurately, including that the wait also applies to memory-mode buffers and ends early when a full batch is accumulated.
• The v6 Kafka, Confluent, and Azure Event Hubs configuration forms expose the new connector/action options with descriptions consistent with the EMQX schema.

References

• Linger description updates: docs(kafka): update max_linger descriptions for wolff 4.1.11 behavior emqx#18101
• New v6 producer options: feat(kafka): add max_batch_age and max_retries producer options (wolff 4.2.1) emqx#18085