Fix color option changes while applying dark/light theme

- Keep wallpaper color and basic color page position while
  onSaveInstanceState() is triggered.
- Restore positions when it initializes if it can get the previous
  saved state, or it will show selected option.
- Video:
  https://drive.google.com/file/d/1t6do6HEsYm3NselclT3-GbYmN9Rj0LIX/

Bug: 229039719
Test: manual
Change-Id: I6dadd7522a380e820f56664ef5370aedc5fcc053