Copper golem mounts shield, spyglass, trident, crossbow, and spear on its horn/lightning rod

Steps to reproduce

1. Put a spyglass in copper chest.

2. Spawn a copper golem.

Expected result

The copper golem takes the item and holds it in its hand.

Observed result

The copper golem takes the item and gets a third eye.

Notes: This affects all attachable items that are attached through the "binding" component in their models instead of the bone name.

How to fix:
Reorder the render controllers in copper_golem.entity.json so the flower controller is last on the list, like this:

"render_controllers": [
  "controller.render.copper_golem",
  "controller.render.copper_golem_eyes",
  "controller.render.copper_golem_flower"
]