23.8 Backport of #57822 - Disable system.kafka_consumers by default

[Enmk]

Changelog category (leave one):

• Bug Fix (user-visible misbehavior in an official stable release)

Changelog entry (a user-readable short description of the changes that goes to CHANGELOG.md):

Disable system.kafka_consumers by default (due to possible live memory leak) (ClickHouse#57822 by @azat)

[altinity-robot]

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