Migrate from AnimatedNavHost

Navigation animation is supported in androidx.navigation.compose now,
migrate to NavHost with animation set in the animatedComposable().

And also adjust the animation to close to the current Settings one.

Bug: 284913888
Test: manual - Test navigation animation in Gallery
Test: manual - Test navigation animation in Settings
Change-Id: Ifd7ed4e5038e83160e9345e47647b3200f4153cf