If a `method_added`/`singleton_method_added` method on a constant doesn't call `super` then none of the `method_added`/`singleton_method_added` methods on ancestors of the constant ever get called by Ruby.

This breaks any code that might want to instrument classes to collect method definition locations, or to do other things when methods are added.

In order to be a good citizen, it is best practice to call `super` from these methods.