Fix allSuperclassesDo:

[Gabriel-Darbord]

The inheritance chain is broken by parametric entities, this is just a temporary fix for this deeper issue.
Parametrics still needs an overhaul.

[Gabriel-Darbord]

I think the failed tests here illustrate some of the problems we have with the current state of parametrics, and why I wanted to change this method.

Metamodels that use parametrics require extra logic to get back to the original behavior before the change.
Now we have to work around the new association between a class and its generic superclass: FamixTConcretization.

Metamodels that do not use parametrics cannot use the extra logic because they do not use the trait, so there is no testing method for it: isParametricEntity.

I think this breaks the agnosticity we want to have in Famix traits, and my proposed fix is not ideal (or even good).
But similar changes have already been made, and we had to add isParametricEntity to FamixStEntity as a workaround (you can see that the method does not have the generated pragma).