app: neck model issues

[alisaad673]

the camera view can look into the avatar through head whenever close to a certain wall or object at a specific angle. steps to reproduce: -go close to any wall or congested place -tyr to look through the first person view into the body

https://user-images.githubusercontent.com/35926530/149631381-0f98a43c-e346-407d-91a1-0ba0b3fa4683.mp4

https://user-images.githubusercontent.com/35926530/149631387-1ecf2852-d674-4258-a84a-b1bdd8f4261a.mp4

[alisaad673]

This issue is also present with first person view when riding vehicles(hovercraft, Dragon). we can see through avatars body.

https://user-images.githubusercontent.com/35926530/150176182-69d6bd8b-cec5-4ebc-bcfd-b11b4c86403d.mp4

https://user-images.githubusercontent.com/35926530/150176203-06e5bfd9-b184-4522-a7d3-6cb5ceaf4153.mp4

[alisaad673]

This issue also exists while we try to look into avatar while the app is loading