```
SELECT
    CAST(([2, 1, 1023], ['', '']), 'Map(UInt8, String)') AS map,
    map[10]
```

Triggers `Assertion 'n < size()' failed` in `DB::ColumnString::operator[](unsigned long)`
https://clickhouse-test-reports.s3.yandex.net/18481/64c4ade5b0e0c9a13d6c2475431daf431fc97554/fuzzer/fuzzer.log

Introduced here: #17829
First found here: #18481
using Types = std::decay_t<decltype(types)>;
                using LeftDataType = typename Types::LeftType;
                using RightDataType = typename Types::RightType;
                if constexpr (IsDataTypeDecimalOrNumber<LeftDataType> && IsDataTypeDecimalOrNumber<RightDataType>)
                {
                    if (wrapper_cast_type == CastType::accurate)
                    {
                        AccurateConvertStrategyAdditions additions;
                        additions.scale = scale;
                        result_column = ConvertImpl<LeftDataType, RightDataType, NameCast>::execute(
                            arguments, result_type, input_rows_count, additions);
                        return true;
                    }
                    else if (wrapper_cast_type == CastType::accurateOrNull)
                    {
                        AccurateOrNullConvertStrategyAdditions additions;
                        additions.scale = scale;
                        result_column = ConvertImpl<LeftDataType, RightDataType, NameCast>::execute(
                            arguments, result_type, input_rows_count, additions);
                        return true;
                    }
                }
                result_column = ConvertImpl<LeftDataType, RightDataType, NameCast>::execute(arguments, result_type, input_rows_count, scale);
                return true;
            });
            
            if (!res)
            {
                if (wrapper_cast_type == CastType::accurateOrNull)
                {