[1.9] Mooshroom body is rotated compared to the cow, but they share the model

Partner Rank: 2

Summary:
The mooshroom model is rotated when it's parent model is the cow. 

Impact:

The model appears broken which may lead to wanting a refund or bad reviews. It also means the model is different from the screenshots which is misleading costumers 

Repro Steps:

1. Download Movie Star Creative toolbox from the store
2. Create a world 
3. Spawn the two vending machines  
4. Observe the cow model is normal whereas the mooshroom version is rotated 

1. Rerun the same test in 1.8.0 Client 
2. Observe the mooshroom not laying down

Observed Results: 

The mooshroom is rotated whereas the cow is correct 

Expected Results: 
The mooshroom displays the same model as the cow as they share the model

Screenshots/Videos attached: 
Yes

Regression Builds:

1346382 1.8.0.21