Bug: Infinite recursion

[nielsenko]

RealmResult<T>.IndexOf(object o) recurses infinitely.

Test case:

public class Dummy : RealmObject
{
    public IList<Dummy> Friends { get; }
}

[Test]
public void IndexOfTest()
{
    using (var realm = OpenRealm())
    {
        var f = new Dummy();
        var d = new Dummy { Friends = { f } };

         var realmList = d.Friends;
         Assert.That(realmList.IndexOf(f), Is.Zero);

         var realmResult = realm.All<Dummy>() as RealmCollectionBase<Dummy>;
         // Assert.That(realmResult.IndexOf(f), Is.Not.Negative); // this causes infinite recursion!
    }
}

This happens because RealmResult<T> implements IndexOf(object o) as:

public override int IndexOf(object value) => IndexOf((T)value);

but doesn't implement a IndexOf(T item), unlike RealmList<T> which also derive from RealmCollectionBase<T>.

[nielsenko]

I can confirm this is fixed with 4.2.0