Fix pulsing score size animation.
Fix pulsing score size animation.

Pulsing score size animation looked choppy before according to some testers. Fix
animation by lowering bias on the growing animation while leaving the shrinking
animation to be relatively passive. Create more responsive-looking growing
effect.
PiperOrigin-RevId: 145324291
Change-Id: Ic7ae0e1f20265a76c8f5b0c95d251867005d7242

google/flatui,google/flatui,google/flatui,google/flatui