Mob head items are displayed incorrectly in first person

The 'template_skull.json' and 'dragon_head.json' item models have no 'firstperson_righthand' tags, and as a result, do not display correctly when held in first person.

 

Attachments:

• Old models without firstperson_righthand tags and image with old models.
• Fixed models with firstperson_righthand tags and image with fixed models.