C#: Godot.Collections.Array.IndexOf() and other similar methods should use the element type's implementation of Equals()

[dannflor]

I was trying to get IndexOf() to find an object so I overrode Equals(). While this would've worked with a native C# array, it didn't work for a Godot Array. Shouldn't it?

[AThousandShips]

• This is already tracked, at least formally, in Add more array methods: first_custom, last_custom, count_custom #6889

As IndexOf uses find and a custom function can be used there too, though currently none of the custom functions like bsearch_custom are available in C# it seems, changing the default behaviour isn't supported here as custom equality operators aren't supported, it will always use the builtin equality for objects

Edit: correction, see godotengine/godot#71786 for the reasoning behind that

However, the search like this won't allow custom equality at least not at the moment due to compatibility with core