Rotate actor on tick with frame-rate independence using DeltaSeconds

Pattern: EventTick → DeltaSeconds output → Multiply_FloatFloat(DeltaSeconds, RotationSpeed) → MakeRotator(0, 0, Result) → K2_AddActorWorldRotation(MakeRotator output). Always multiply by DeltaSeconds. Use K2_AddActorLocalRotation for self-relative spin. RotationSpeed variable default ~30-90 degrees/sec.