Absorption is infinite

[kanpov]

Issue

As soon as you lose one of your absorption hearts, they immediately regenerate because the effect gets reapplied by the system.

Proposal

In GemAmuletConfig, create a map of uponInsertionEffects.

Create an ItemStackMixin that checks if the item is an amulet and applies the uponInsertionEffects.

[kanpov]

I'm going to go with a mixin-less approach because mixins require too much @Injects to cover all possible situations.

Instead, I'm going to store a flag initialized in GemAmuletState and, if it's false, set it to true and apply the onInsertEffects.