Unable to define enum default value on an input type

[CoskunSunali]

Describe the bug
Defining a default value for an enum property on an input type throws the following exception:

SchemaException: Could not parse the native value of input field `{0}.{1}`. - Type: FilterInput

Where FilterInput is:

    public sealed class Filter
    {
        [DefaultValue(OrderByEnum.POPULARITY)]
        public OrderByEnum OrderBy { get; set; }
    }

And OrderByEnum is:

    public enum OrderByEnum
    {
        SORT_INDEX_ASC,
        SORT_INDEX_DESC,
        ALPHABETICAL_ASC,
        ALPHABETICAL_DESC,
        POPULARITY
    }

Expected behavior
That the following schema gets created:

input FilterInput {
  orderBy: OrderByEnum = POPULARITY
}

HC version: 10.4.2

[TranQuangTienSA]

I has same issue with version 10.5.2

[benmccallum]

I believe I've also had the same issue just on an argument, e.g. not inside an input type.

public string GetSomething(..., SomeEnum argName = SomeEnum.Lol) => { ... };