**Describe the issue**
Can't insert `String` data to column with `LowCardinality` type.

Starting from 21.1 this query fails

**How to reproduce**
```sql
CREATE TABLE default.lc_test
(   
    `id` LowCardinality(String)
)
ENGINE = MergeTree
PARTITION BY tuple()
ORDER BY id;

Ok.
0 rows in set. Elapsed: 0.003 sec.


insert into lc_test values (toString('a'));
Exception on client:
Code: 49. DB::Exception: Bad cast from type DB::ColumnString to DB::ColumnLowCardinality: data for INSERT was parsed from query

```

**Additional context**
related to issue https://github.com/DarkWanderer/ClickHouse.Client/issues/66

version 20.12 ok
(nested_type_info.isNativeInt()  && nested_field_type == Type::Int64)  ||
                (nested_type_info.isFloat64()    && nested_field_type == Type::Float64);
            if (!are_types_compatible)
                return false;
        }
        Field array_same_types = convertFieldToType(collection, *complex_type, nullptr);
        columns[column_idx]->insert(array_same_types);
        return true;
    }
    else
    {
        Field number;
        if (type_info.is_nullable && 4 <= istr.available() && 0 == strncasecmp(istr.position(), "NULL", 4))
            istr.position() += 4;
        else
        {
            
            
            
            bool negative = *istr.position() == '-';
            if (negative || *istr.position() == '+')
                ++istr.position();
            static constexpr size_t MAX_LENGTH_OF_NUMBER = 319;
            char buf[MAX_LENGTH_OF_NUMBER + 1];
            size_t bytes_to_copy = std::min(istr.available(), MAX_LENGTH_OF_NUMBER);
            memcpy(buf, istr.position(), bytes_to_copy);
            buf[bytes_to_copy] = 0;
            char * pos_double = buf;
            errno = 0;
            Float64 float_value = std::strtod(buf, &pos_double);