We use Clickhouse version 22.3.3.44, and met with with some wrong behaviour - 
queries "ALTER TABLE ... MODIFY COMMENT ... " does not work on ReplicatedMergeTree engine.

Bug reproduce script:
```
CREATE TABLE sandbox.test__calendar
(
    `dttm` DateTime COMMENT 'date and time',
    `timestamp` Int64 COMMENT 'event timestamp',
    `year_num` Int32 COMMENT 'year number'
)
ENGINE = ReplicatedMergeTree() PARTITION BY year_num ORDER BY timestamp
COMMENT 'Comment text for test table';

SELECT comment FROM system.tables WHERE name like 'test__calendar'; -- 1 row selected with correct comment text

ALTER TABLE sandbox.test__calendar MODIFY COMMENT 'Some new more detailed text of comment';

SELECT comment FROM system.tables WHERE name like 'test__calendar'; -- 1 row selected, but with OLD(!) comment text
```

Maybe it will be helpfull, ALTER TABLE query returns such result:
```
host            |status|error|num_hosts_remaining|num_hosts_active|
----------------+------+----+-----------------------+------------------+
10.7.179.41     |     0|    |                      1|                 0|
ak1-st-data-01  |     0|    |                      0|                 0|
```
if (!partition && final)
    {
        DataPartsVector data_parts = getVisibleDataPartsVector(query_context);
        std::unordered_set<String> partition_ids;
        for (const DataPartPtr & part : data_parts)
            partition_ids.emplace(part->info.partition_id);
        for (const String & partition_id : partition_ids)
        {
            assigned = try_assign_merge(partition_id);
            if (!assigned)
                break;
        }
    }
    else
    {
        String partition_id;
        if (partition)
            partition_id = getPartitionIDFromQuery(partition, query_context);
        assigned = try_assign_merge(partition_id);
    }
    table_lock.reset();
    for (auto & merge_entry : merge_entries)
        waitForLogEntryToBeProcessedIfNecessary(merge_entry, query_context);
    return assigned;
}
bool StorageReplicatedMergeTree::executeMetadataAlter(const StorageReplicatedMergeTree::LogEntry & entry)
{
    if (entry.alter_version < metadata_version)
    {