I initially ripped out Atom::getLoadSettings in favor of a mutable
property because window spec was making an assumption that such a
property existed anyway. Since load settings need to be available from
class methods, the instance method just delegates to the class method.
But that means there's no ::loadSettings property to mutate in that
spec. I replaced the former approach with a spy which has the added
advantage of not polluting windowSettings for subsequent specs.
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