**Describe the bug**
For DATABASE ENGINE Atomic (used by Default for all databases from 20.10) 
when try to `DROP TALBE replicatedmergetree table ON CLUSTER ... SYNC`, query failed after `distributed_ddl_task_timeout` seconds
`decrease `database_atomic_delay_before_drop_table_sec=1` and setup `database_atomic_wait_for_drop_and_detach_synchronously=1` for default user profile didn't help

**How to reproduce**
just look to https://gist.github.com/Slach/a7f2946a108883f6b1d5585b1b5b6b0d
```
bash -x ./reproduce.sh
```

* Which ClickHouse server version to use
Latest official docker build

* Non-default settings, if any
```
<yandex>
    <database_atomic_delay_before_drop_table_sec>1</database_atomic_delay_before_drop_table_sec>
    <profile>
        <default>
            <database_atomic_wait_for_drop_and_detach_synchronously>1</database_atomic_wait_for_drop_and_detach_synchronously>
            <distributed_ddl_task_timeout>20</distributed_ddl_task_timeout>
        </default>
    </profile>
</yandex>

```

**Expected behavior**
Successfull DROP TABLE on cluster

**Error message and/or stacktrace**
Code: 159. DB::Exception: Received from localhost:9000. DB::Exception: Watching task /clickhouse/task_queue/ddl/query-0000000001 is executing longer than distributed_ddl_task_timeout (=20) seconds. There are 2 unfinished hosts (0 of them are currently active), they are going to execute the query in background.

**Additional context**
table physically deleted, but Atomic engine doesn't return "finished" flag to Zookeeper `distributed_ddl` queue

```
docker-compose exec clickhouse-0-0-0 clickhouse-client -q "SELECT * FROM system.zookeeper WHERE path='/clickhouse/task_queue/ddl/query-0000000001/finished' FORMAT
Vertical"
```

returns empty result


shard_default_databases.push_back(addr.default_database);
                else
                    use_local_default_database = true;
            }
        }
        std::sort(shard_default_databases.begin(), shard_default_databases.end());
        shard_default_databases.erase(std::unique(shard_default_databases.begin(), shard_default_databases.end()), shard_default_databases.end());
        assert(use_local_default_database || !shard_default_databases.empty());
        if (use_local_default_database && !shard_default_databases.empty())
            throw Exception("Mixed local default DB and shard default DB in DDL query", ErrorCodes::NOT_IMPLEMENTED);
        if (use_local_default_database)
        {
            query_requires_access.replaceEmptyDatabase(current_database);
        }
        else
        {
            for (size_t i = 0; i != query_requires_access.size();)
            {
                auto & element = query_requires_access[i];
                if (element.isEmptyDatabase())
                {
                    query_requires_access.insert(query_requires_access.begin() + i + 1, shard_default_databases.size() - 1, element);
                    for (size_t j = 0; j != shard_default_databases.size(); ++j)
                        query_requires_access[i + j].replaceEmptyDatabase(shard_default_databases[j]);
                    i += shard_default_databases.size();
                }
                else
                    ++i;
            }
        }