Fix crash caused by an invalid mixin target with the recent update to Accessories

Fix crash caused by an invalid mixin target with the recent update to Accessories

Fixes:

• Fix cases where Curios ID is used for attribute id instead of using such as a id seed
• Fix issues with tag mutation API using immutable lists
• Fix issues with drop rules not being properly used for curios items leading to some items dropping always

Additions:

• Add an optional Pocket slot, which acts as a replacement for the Curio slot.

Fixes:

• Fix cases where Curios ID is used for attribute id instead of using such as a id seed
• Fix issues with tag mutation API using immutable lists
• Fix issues with drop rules not being properly used for curios items leading to some items dropping always

Additions:

• Add an optional Pocket slot, which acts as a replacement for the Curio slot.

Update for latest accessories version, fix for crashing in event hooks, and Implement Curios Slot Extension API for mods like malum