Add back test properties that were accidentally removed in 69469aedb987e516ff1f43a123b3ee29dfef38ca.
Add back test properties that were accidentally removed in 69469aedb987e516ff1f43a123b3ee29dfef38ca.

material-motion/motion-animator-objc,material-motion/motion-animator-objc,material-motion/motion-animator-objc