Collision system does not account for possible edge cases in vanilla data

[S41L0R]

The baked collision rebuilder does not account for situations where:

1. A ShapeInfo is referenced by an ActorInfo but has a value of -1 for m_actorInfoIndex. The index is currently updated. It is unknown whether this has harmful effects or not.
2. A shape instance has an offset transform compared to an actor instance. Offsets are currently discarded, and it is unknown whether this ever occurs in game.

[S41L0R]

Null m_actorInfoIndex now supported.