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 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;