Hello!

I've started to use `DateTime64` recently and faced the next issue with `toDate()`/`toDate32()` functions.

This query works fine:
```sql
SELECT toDate('2022-07-26 00:00:00')

Query id: bf64d8a8-018d-4b3e-ae24-f92600a1fa15

┌─toDate('2022-07-26 00:00:00')─┐
│                    2022-07-26 │
└───────────────────────────────┘

1 rows in set. Elapsed: 0.003 sec.
```

But when the string representation of the timestamp has the milliseconds fraction the function does not work:
```sql
SELECT toDate('2022-07-26 00:00:00.000')

Query id: 8b42473a-0ceb-4892-b0e7-6f73f583d4b4


0 rows in set. Elapsed: 0.006 sec.

Received exception from server (version 22.3.8):
Code: 6. DB::Exception: Received from s:9000. DB::Exception: Cannot parse string '2022-07-26 00:00:00.000' as Date: syntax error at position 10 (parsed just '2022-07-26'): While processing toDate('2022-07-26 00:00:00.000'). (CANNOT_PARSE_TEXT)
```

The `toDate32()` doesn't work in both cases.

Yes, you can say I must change the input or use a workaround like this:
```sql
SELECT toDate(toDateTime64('2022-07-26 00:00:00.000', 3, 'UTC')) AS date
```

But it's not convenient and it'd be great if the mentioned functions will ignore the time part.

P.s. ClickHouse server version: `22.3.8.39`

auto make_custom_serialization_wrapper = [&, cast_ipv4_ipv6_default_on_conversion_error_value](const auto & types) -> bool
        {
            using Types = std::decay_t<decltype(types)>;
            using ToDataType = typename Types::RightType;
            using FromDataType = typename Types::LeftType;
            if constexpr (WhichDataType(FromDataType::type_id).isStringOrFixedString())
            {
                if (to_type->getCustomSerialization() && to_type->getCustomName())
                {
                    if (to_type->getCustomName()->getName() == "IPv4")
                    {
                        ret = [cast_ipv4_ipv6_default_on_conversion_error_value](
                                  ColumnsWithTypeAndName & arguments, const DataTypePtr & result_type, const ColumnNullable * column_nullable, size_t)
                            -> ColumnPtr
                        {
                            if (!WhichDataType(result_type).isUInt32())
                                throw Exception(ErrorCodes::TYPE_MISMATCH, "Wrong result type {}. Expected UInt32", result_type->getName());
                            const auto * null_map = column_nullable ? &column_nullable->getNullMapData() : nullptr;
                            if (cast_ipv4_ipv6_default_on_conversion_error_value)
                                return convertToIPv4<IPStringToNumExceptionMode::Default>(arguments[0].column, null_map);
                            else
                                return convertToIPv4<IPStringToNumExceptionMode::Throw>(arguments[0].column, null_map);
                        };
                        return true;
                    }
                    if (to_type->getCustomName()->getName() == "IPv6")
                    {
                        ret = [cast_ipv4_ipv6_default_on_conversion_error_value](
                                  ColumnsWithTypeAndName & arguments, const DataTypePtr & result_type, const ColumnNullable * column_nullable, size_t)
                            -> ColumnPtr