Heads are bugged as hell

[uSkizzik]

Describe the bug
There are multiple rendering issues.
First off, the X rotation of the heads is fucked, most likely a miss-placed pivot.
Another thing, the heads refuse to be animated or rotate during the beginning transition and the Sleeping stage.

To Reproduce

1. Create or load a world
2. Spawn a Skizzik
3. Punch it and observe the second issue
4. Spawn a Candy Pig and observe the first issue

Expected behavior
All heads should be rotating on the Sleeping stage based on the entity model.
They should also be animated on the beginning transition and they should rotate properly.

Please complete the following information:

• Applicable Branch / Mod Version: Development
• Minecraft Version: 1.17.1

Screenshots