```
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
{
        if (arguments.empty())
            throw Exception{"Function " + getName() + " expects at least 1 arguments",
               ErrorCodes::TOO_FEW_ARGUMENTS_FOR_FUNCTION};
        const IDataType * from_type = arguments[0].type.get();
        ColumnPtr result_column;
        auto call = [&](const auto & types, const auto & tag) -> bool
        {
            using Types = std::decay_t<decltype(types)>;
            using LeftDataType = typename Types::LeftType;
            using RightDataType = typename Types::RightType;
            using SpecialTag = std::decay_t<decltype(tag)>;
            if constexpr (IsDataTypeDecimal<RightDataType>)
            {
                if constexpr (std::is_same_v<RightDataType, DataTypeDateTime64>)
                {
                    
                    if (arguments.size() != 2 && arguments.size() != 3)
                        throw Exception{"Function " + getName() + " expects 2 or 3 arguments for DataTypeDateTime64.",
                            ErrorCodes::TOO_FEW_ARGUMENTS_FOR_FUNCTION};
                }
                else if (arguments.size() != 2)
                {
                    throw Exception{"Function " + getName() + " expects 2 arguments for Decimal.",
                        ErrorCodes::TOO_FEW_ARGUMENTS_FOR_FUNCTION};
                }
                const ColumnWithTypeAndName & scale_column = arguments[1];