Copper Golem Displays Spear on its Head Instead of in Hand When Holding It

In the Bedrock Edition, there is an issue with the rendering of attachment points for held items on the copper golem. Specifically, when a copper golem picks up or is given a spear, the client incorrectly renders the spear model as being attached to the entity's head, rather than being held in its hand. This is a visual bug caused by an error in the spear's attachment definition within the animation files.

How to Reproduce:

1. Place a copper golem in the world.

2. Place a copper chest containing a spear near the copper golem.

3. Wait copper golem interact with the copper chest.

4. Observe the bopper golem as it takes the spear from the chest.

Observed Result:
The spear model is visibly attached to and protrudes from the top of the Copper Golem's head, instead of being held in its hand.

Expected Result:
The spear should be correctly rendered in the Copper Golem's hand, matching the visual behavior of how it holds other items and aligning with the standard item-holding animation for mobs.