Third-person spear animation stutters when rotating camera (Bedrock 26.52)

### Affected Version

Minecraft Bedrock Edition 26.52

Platform: Android

### Steps to reproduce

1. Create clean vanilla world, no resource packs or add-ons.

2. Hold Netherite Spear, play spear animation.

3. Rotate camera in third-person view.

Actual: Player and spear animation jitter.

Expected (Java): Animation stays smooth during camera rotation.