Ars Nouveau Tweak - Fix for Version 1.18.2

The Ars Nouveau modification for Minecraft 1.18.2 contains an annoying bug: the amethyst golem can pick up multiple items simultaneously if they have special golem or shard tags, merging them into a single object.

The developers fixed this issue in the updated version for Minecraft 1.20, but the correction was never backported to older game branches. This add-on solves this problem by applying minimal intervention to the base mod's source code through a special mixin.