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**Describe the bug**

Interval data type is not passed correctly from subquery

**Does it reproduce on recent release?**

Yes, tested on 21.6.5.37.

**How to reproduce**

```sql
SELECT
    toIntervalDay(5) AS interval,
    now() + interval AS res

┌─interval─┬─────────────────res─┐
│        5 │ 2021-07-03 13:11:45 │
└──────────┴─────────────────────┘
```

But if I wrap interval calculation in subquery:

```sql
SELECT
    (SELECT toIntervalDay(5)) AS interval,
    now() + interval AS res

Received exception from server (version 21.6.5):
Code: 70. DB::Exception: Received from localhost:9000. DB::Exception: Conversion from Int8 to IntervalDay is not supported: While processing CAST(5, 'IntervalDay') AS interval, now() + interval AS res.
```

**Expected behavior**

Both queries should work the same way.
{
        auto key_value_types = from_map.getKeyValueTypes();
        if (!isStringOrFixedString(key_value_types[0]))
            throw Exception(ErrorCodes::TYPE_MISMATCH,
                "Cast to Object from Map can be performed only from Map "
                "with String or FixedString key. Got: {}", from_map.getName());
        const auto & value_type = key_value_types[1];
        auto to_value_type = value_type;
        if (!has_nullable_subcolumns && value_type->isNullable())
            to_value_type = removeNullable(value_type);
        if (has_nullable_subcolumns && !value_type->isNullable())
            to_value_type = makeNullable(value_type);
        DataTypes to_key_value_types{std::make_shared<DataTypeString>(), std::move(to_value_type)};
        auto element_wrappers = getElementWrappers(key_value_types, to_key_value_types);
        return [has_nullable_subcolumns, element_wrappers, key_value_types, to_key_value_types]
            (ColumnsWithTypeAndName & arguments, const DataTypePtr &, const ColumnNullable * nullable_source, size_t) -> ColumnPtr
        {
            const auto & column_map = assert_cast<const ColumnMap &>(*arguments.front().column);
            const auto & offsets = column_map.getNestedColumn().getOffsets();
            auto key_value_columns = column_map.getNestedData().getColumnsCopy();
            for (size_t i = 0; i < 2; ++i)
            {
                ColumnsWithTypeAndName element{{key_value_columns[i], key_value_types[i], ""}};
                key_value_columns[i] = element_wrappers[i](element, to_key_value_types[i], nullable_source, key_value_columns[i]->size());
            }
            const auto & key_column_str = assert_cast<const ColumnString &>(*key_value_columns[0]);
            const auto & value_column = *key_value_columns[1];
            using SubcolumnsMap = HashMap<StringRef, MutableColumnPtr, StringRefHash>;
            SubcolumnsMap subcolumns;