Call P_ResetCamera Upon Switching To/From an Away View Camera

Requires !2008 (merged). Makes it so that whenever you enter or exit an Away View Camera, whether in source or via Lua, P_ResetCamera is called to reset the camera (particularly its interpolation).

Before:

SRB2_v2.2.11_2023-06-03_15-36-49

After:

SRB2_v2.2.11_2023-06-03_15-42-26