Use float3, float3x3, and Array for data used for mesh crazyspace calculation. Propagate the change wherever necessary to not add more casting to the old C types. Because `ObjectRuntime` (and therefore `DEGObjectIterData`) became non-trivial structs, the code that swaps iterators for RNA depsgraph object iteration had to be changed a bit to be more friendly to C++ memory semantics. Pull Request: https://projects.blender.org/blender/blender/pulls/114998