```
create table default.test_parent
(
    id        UInt64,
    parent_id Nullable(UInt64)
) engine = MergeTree

create dictionary default.d4test_parent
    ( id UInt64,
    parent_id  Nullable(UInt64) HIERARCHICAL
    )
    PRIMARY KEY id
    SOURCE (CLICKHOUSE(DB 'default' TABLE 'test_parent'))
    LIFETIME (MIN 0 MAX 0)
    LAYOUT (HASHED)
;
insert into default.test_parent
values (1, null),
       (2, 3),
       (3, 1),
       (4, 2)
;
system reload dictionary default.d4test_parent
;
select dictGetDescendants('default.d4test_parent', toUInt64(2))
;
```

Code: 53. DB::Exception: default.d4test_parent (443f6664-e217-44ec-80e2-bbec982b4963): type mismatch: column has wrong type expected UInt64: While processing dictGetDescendants('default.d4test_parent', 2). (TYPE_MISMATCH) (version 22.3.2.1)


On old versions no errors
```
select version()
-- 21.11.6.7
;
select dictGetDescendants('default.d4test_parent', toUInt64(2))
-- [4]
```
{
    const auto keys_count = loaded_keys.size();
    PaddedPODArray<UInt64> keys;
    keys.reserve(keys_count);
    for (size_t key_index = 0; key_index < keys_count; ++key_index)
        if (loaded_keys[key_index])
            keys.push_back(key_index);
    auto keys_column = getColumnFromPODArray(std::move(keys));
    ColumnsWithTypeAndName key_columns = {ColumnWithTypeAndName(keys_column, std::make_shared<DataTypeUInt64>(), dict_struct.id->name)};
    std::shared_ptr<const IDictionary> dictionary = shared_from_this();
    auto coordinator =std::make_shared<DictionarySourceCoordinator>(dictionary, column_names, std::move(key_columns), max_block_size);
    auto result = coordinator->read(num_streams);
    return result;
}
void registerDictionaryFlat(DictionaryFactory & factory)
{
    auto create_layout = [=](const std::string & full_name,
                            const DictionaryStructure & dict_struct,
                            const Poco::Util::AbstractConfiguration & config,