Create consumers for Kafka tables on fly with TTL (resubmit)

[azat]

Changelog category (leave one):

• Improvement

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

Create consumers for Kafka tables on fly (but keep them for some period - kafka_consumers_pool_ttl_ms, since last used), this should fix problem with statistics for system.kafka_consumers (that does not consumed when nobody reads from Kafka table, which leads to live memory leak and slow table detach) and also this PR enables stats for system.kafka_consumers by default again.

Pool of consumers created a problem for librdkafka internal statistics,
you need to read from the queue always, while in ClickHouse consumers
created regardless are there any readers or not (attached materialized
views or direct SELECTs).

Otherwise, this statistics messages got queued and never released,
which:

• creates live memory leak
• and also makes destroy very slow, due to librdkafka internals (it
  moves entries from this queue into another linked list, but in a
  with sorting, which is incredibly slow for linked lists)

So the idea is simple, let's create a pool of consumers only when they
are required, and destroy them after some timeout (right now it is 60
seconds) if nobody uses them, that way this problem should gone.

This should also reduce number of internal librdkafka threads, when
nobody reads from Kafka tables.

Fixes: #50999 (cc @ilejn)
Resubmits: #57829 (the last patch from the PR fixes the use-after-free reported here #57829 (comment))

[robot-clickhouse]

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[azat]

AST fuzzer (msan) — Logical error: 'CopyTransform expects more than 1 outputs, got 1'.

• (Analyzer: experimental feature, still in development) CopyTransform expects more than 1 outputs, got 1 #58341

Stateless tests (aarch64) — fail: 1, passed: 5940, skipped: 29

• 00002_log_and_exception_messages_formatting - cc @tavplubix

Stateless tests (debug, s3 storage) [6/6] — Tests are not finished, fail: 9, passed: 620, skipped: 11

• Logical error: Bad cast from type DB::ColumnSparse to DB::ColumnVector<long> #58338

[tavplubix]

00002_log_and_exception_messages_formatting - cc @tavplubix

#58351