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|
```
{
    ReplicatedMergeTreeQuorumAddedParts::PartitionIdToMaxBlock max_added_blocks;
    for (const auto & data_part : getDataPartsForInternalUsage())
    {
        max_added_blocks[data_part->info.partition_id]
            = std::max(max_added_blocks[data_part->info.partition_id], data_part->info.max_block);
    }
    auto zookeeper = getZooKeeper();
    const String quorum_status_path = fs::path(zookeeper_path) / "quorum" / "status";
    String value;
    Coordination::Stat stat;
    if (zookeeper->tryGet(quorum_status_path, value, &stat))
    {
        ReplicatedMergeTreeQuorumEntry quorum_entry;
        quorum_entry.fromString(value);
        auto part_info = MergeTreePartInfo::fromPartName(quorum_entry.part_name, format_version);
        max_added_blocks[part_info.partition_id] = part_info.max_block - 1;
    }
    String added_parts_str;
    if (zookeeper->tryGet(fs::path(zookeeper_path) / "quorum" / "last_part", added_parts_str))
    {
        if (!added_parts_str.empty())
        {
            ReplicatedMergeTreeQuorumAddedParts part_with_quorum(format_version);
            part_with_quorum.fromString(added_parts_str);
            auto added_parts = part_with_quorum.added_parts;
            for (const auto & added_part : added_parts)
                if (!getActiveContainingPart(added_part.second))
                    throw Exception(