Fix BVH to world_aabb, and call update

[lawnjelly]

The calls to the BVH need to use the world space AABB, rather than local space for it to work. Also, update was not being called which is required to update the AABB as objects move.

Also adds a no-op check to updates in the BVH (if the AABB hasn't changed, no need to update).

Notes

• See Replace Octree by DynamicBVH in cull code #44623

[lawnjelly]

Yes, can confirm, results are much more sensible now:

N [-8.896008, -8.665053, -7.578704, 9.959669, 7.271134, 3.794497]
	N [-8.896008, -3.944535, -7.578704, -0.522229, 5.220212, 2.376413]
		N [-8.896008, -3.944535, -7.578704, -0.522229, -0.851945, -1.225996]
			L [-8.896008, -1.051946, -1.459186, -8.662817, -0.851945, -1.225996]
			L [-0.755419, -3.944535, -7.578704, -0.522229, -3.744534, -7.345514]
		N [-6.002581, 4.830162, -4.089075, -1.929282, 5.220212, 2.376413]
			L [-6.002581, 4.830162, -4.089075, -5.769391, 5.030162, -3.855885]
			L [-2.162472, 5.020211, 2.143223, -1.929282, 5.220212, 2.376413]
	N [2.961768, -8.665053, -4.940091, 9.959669, 7.271134, 3.794497]
		N [2.961768, -7.519677, 1.149546, 9.959669, 7.271134, 2.276365]
			L [2.961768, -7.519677, 2.043175, 3.194958, -7.319676, 2.276365]
			L [9.726479, 7.071133, 1.149546, 9.959669, 7.271134, 1.382737]
		N [4.359582, -8.665053, -4.940091, 5.016697, -5.694136, 3.794497]
			L [4.359582, -8.665053, 3.561306, 4.592772, -8.465052, 3.794497]
			L [4.783507, -5.894136, -4.940091, 5.016697, -5.694136, -4.706901]

I'll also put a no-op check on the update function.