**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
{
    IInputFormat::resetParser();
    
    
    buf.reset();
    total_rows = 0;
}
void registerInputFormatProcessorValues(FormatFactory & factory)
{
    factory.registerInputFormatProcessor("Values", [](
        ReadBuffer & buf,
        const Block & header,
        const RowInputFormatParams & params,
        const FormatSettings & settings)
    {
        return std::make_shared<ValuesBlockInputFormat>(buf, header, params, settings);
    });
}
}