Exit Mirrors Initial for Symmetry

Exit animation should mirror initial for symmetry.

Incorrect (asymmetric exit):

<motion.div
  initial={{ opacity: 0, y: 20 }}
  animate={{ opacity: 1, y: 0 }}
  exit={{ scale: 0 }}
/>

Correct (symmetric exit):

<motion.div
  initial={{ opacity: 0, y: 20 }}
  animate={{ opacity: 1, y: 0 }}
  exit={{ opacity: 0, y: 20 }}
/>