```
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 IDictionary * dictionary,
    ColumnPtr key_column,
    const DataTypePtr & key_type,
    size_t & valid_keys)
{
    valid_keys = 0;
    key_column = key_column->convertToFullColumnIfConst();
    const auto * key_column_typed = checkAndGetColumn<ColumnVector<UInt64>>(*key_column);
    if (!key_column_typed)
        throw Exception(ErrorCodes::UNSUPPORTED_METHOD, "Key column should be UInt64");
    const auto & dictionary_structure = dictionary->getStructure();
    size_t hierarchical_attribute_index = *dictionary_structure.hierarchical_attribute_index;
    const auto & hierarchical_attribute = dictionary_structure.attributes[hierarchical_attribute_index];
    const PaddedPODArray<UInt64> & requested_keys = key_column_typed->getData();
    HashMap<UInt64, UInt64> key_to_parent_key = getChildToParentHierarchyMapImpl(dictionary, hierarchical_attribute, requested_keys, key_type);
    auto is_key_valid_func = [&](auto & key) { return key_to_parent_key.find(key) != nullptr; };
    auto get_parent_key_func = [&](auto & key)
    {
        auto it = key_to_parent_key.find(key);
        std::optional<UInt64> result = (it != nullptr ? std::make_optional(it->getMapped()) : std::nullopt);
        valid_keys += result.has_value();
        return result;
    };
    UInt64 null_value = hierarchical_attribute.null_value.get<UInt64>();
    auto dictionary_hierarchy_array = getKeysHierarchyArray(requested_keys, null_value, is_key_valid_func, get_parent_key_func);
    return dictionary_hierarchy_array;
}
ColumnUInt8::Ptr getKeysIsInHierarchyDefaultImplementation(