Incorrect shading in entities with rotating parts

The bug:

Rotating elements in entities are shaded incorrectly. This can be easily observed in:

1. The player's head when it moves around;

2. Panda heads while they're sitting;

3. Lazy pandas while they're laying;

4. Shulkers when they're not standing upwards;

5. Villagers when they're sleeping;

6. Any mob when it's looking up;

7. Armor Stand arms in certain poses;

8. Ravager's different body parts;

9. 2D projectiles (they behave similarly to the player's head).

Screenshots/Videos attached: Yes

Notes: This is an issue with Render Dragon, and it's one of the only things that differ visually from the old rendering engine.