[fix] [broker] [break config settings] Do not support disabling the scheduled task deduplicationSnapshotMonitor anymore

[poorbarcode]

Motivation

Related to #22479

Background

• When a topic is loading up, it will wait for the deduplication recovery to be finished if deduplication is enabled.
  • users can enable deduplication on the broker level, namespace level or topic level.
• There is a scheduled task to acknowledge messages for the deduplication cursor.

Issue
The broker has no way to disable Deduplication(users can enable this feature by broker.conf. brokerDeduplicationEnabled , namespace level policies, or topic level policies), so the broker should not provide a way to turn off this scheduled task deduplicationSnapshotMonitor.

Modifications

Do not support disabling the scheduled task deduplicationSnapshotMonitor.

Documentation

• doc
• doc-required
• doc-not-needed
• doc-complete

Matching PR in forked repository

PR in forked repository: x

[poorbarcode]

Since there is another fix that triggers a new snapshot building after a topic is loaded, the current PR can be closed. See: https://github.com/apache/pulsar/pull/22479/files#diff-32e651dda4c98296475fd4e3cd322c76d6da3618c1013eda21c6b9033dec1bc1R190-R191