Apply crumpled package mechanics to Klaus gifts

[shadowDigga]

Chance of getting specific rare blueprint from crumpled packages decreases if this blueprint was already learnt by the person who opened the package, making the chance to get trinkets or unlearnt blueprints higher. It would've been great if Klaus gifts rare blueprints probability also varied this way. I mean, I got three Green Funcap blueprints in a row from Klaus and I already knew how to make it thanks to Misery Toadstool. Gifts' content is generated when Loot Stash is opened with Stag Antler so the knowledge should be checked of person who used Stag Antler.