Bug: light_rt parented to objects doesn't actually rotate, creating a jarring disconnect when using light cookies

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Describe the bug

Usually light_rt rotation values don't matter, but with the introduction of light cookies, it becomes incredibly apparent that light_rt doesn't rotate at all.

To Reproduce

1. Parent a light_rt to a physics object
2. Set an abstract light cookie texture
3. Move said physics object in game and observe the light not moving

Issue Map

N/A

Expected Behavior

A parented light_rt entity, especially one using light cookies, should respect its parent's rotation values as it moves.

Operating System

No response