Some artifacts and trinkets do not benefit mobs

[Dual-Iron]

Describe the bug
When possessing a mob, some artifacts simply don't work. This includes, but is not limited to, the Fire Gauntlet, Power Glove, Pocket Piston, Crystal Heart, and Thorn Pendant. This has a serious impact on Requiem gameplay, especially as a Wandering Soul.

To Reproduce
Steps to reproduce the behavior:

1. Equip a mob with a trinket, e.g. by possessing it using Requiem
2. The artifact has no effect. For example, a piglin that has Crystal Heart does not have extra health, and attacking a villager that has a Thorn Pendant does nothing. Bunny Slippers do give Jump Boost correctly, but they don't negate fall damage.

Game Environment
1.16.5 Minecraft, 0.34.1 Fabric API, 3.2.0 Artifacts, 2.6.7 Trinkets, 1.7.6 Requiem

Also posted here: Ladysnake/Requiem#326

[Fade-Alchemist]

I have the same issue, the bunny hoppers do not provide feather falling for mobs with requiem as an example.