Fixed NPCs no longer getting hit by vehicles.
Set Obstacle Avoidance on the NPC NavAgent to NONE because otherwise vehicles cannot hit them - they simply flow out of the way no matter what the speed. With it off, stationary vehicles are still pathed around as they carve out the navmesh itself when not moving.
If we want to have Obstacle Avoidance on, we'll need to manually disable the NavMesh Obstacle vehicle component whenever vehicles are moving. And DON'T test changes in combined client+server mode, it works differently.