Update gesture nav edu motion and colors

- Updated gesture nav edu overview step post-success motion and colors
- Updated gesture nav edu menu done button color and legacy action button color
- Switching light/dark mode when a step is complete started the demonstration animation. fixed this jank

Flag: ENABLE_NEW_GESTURE_NAV_TUTORIAL
Fixes: 281764891
Fixes: 283964958
Bug: 279823249
Test: ran full tutorial with ENABLE_NEW_GESTURE_NAV_TUTORIAL enabled and disabled
Change-Id: I9adc05947267ec038b6f374b2a29a5499468883b