RSRP-288580: Loop can be converted into LINQ-expression breaks the code when used with "ref" parameters

Hi.
Using "Loop can be converted into LINQ-expression" feature in a loop that calls a method with two or more parameters where one of the parameters is passed by reference and the other is not creates a LINQ expression that doesn't compile.

The following example demonstrates this (It logically doesn't have any sense at all - I stumbled upon this issue in a more complex scenario but I can't provide the code).

    class Program
    {
        static void Main()
        {
            var list = Enumerable.Range(0, 10);
            var result = new List<string>();

            foreach(var item in list)
            {
                var itemAsString = item.ToString(CultureInfo.InvariantCulture);
                result.Add(SomeMethod(ref itemAsString, item));
            }
        }

        static string SomeMethod(ref string param, int whatever)
        {
            return param.ToUpper();
        }
    }

    class Program
    {
        static void Main()
        {
            var list = Enumerable.Range(0, 10);
            var result = (from item in list let itemAsString = item.ToString(CultureInfo.InvariantCulture) select SomeMethod(ref itemAsString, item)).ToList();
        }

        static string SomeMethod(ref string param, int whatever)
        {
            return param.ToUpper();
        }
    }

After conversion there is a compilation error:
Cannot pass the range variable 'itemAsString' as an out or ref parameter

I'm using R# version 6.1.37.86.
The sample application is attached.