Error when using LINQ Select an object or GroupBy an Object

[Yuze]

Version used

3.0.0-beta-2057

Describe the bug

I can use linq to select a value, but I can't select an object.

var engine = new Engine(cfg => cfg
    .AllowClr()
    .AddExtensionMethods(typeof(System.Linq.Enumerable))
);
let someArray = [ 2, 4 ];
let newArray = someArray.Select(m => ({a:m,b:m})).ToArray();

The error message "Object must implement IConvertible"

To Reproduce

Ideally code samples or better yet, xUnit test against current main.

Expected behavior

A clear and concise description of what you expected to happen.

Additional context

Add any other context about the problem here.

[Marko Lahma]

Why do you want to dramatically slow down the script performance by using LINQ interop where simple Array.map would suffice?

[Yuze]

The above is just an example to show that although Jint already supports LINQ operations, it seems incomplete. #304
Sometimes you need to operate on .NET objects, and you must use LINQ operations.

In addition, GroupBy will also report the same error.

var engine = new Engine(cfg => cfg
    .AllowClr()
    .AddExtensionMethods(typeof(System.Linq.Enumerable))
);
;
someDotnetList.GroupBy(m => ({a:m,b:m})).ToArray();

[Marko Lahma]

Would you like to help out with a fix PR including missing test coverage for the cases you've found?