Match height for ColorSectionView and WallpaperQuickSwitchView

Modify ColorSectionView to have the same padding and height of
WallpaperQuickSwitchView. The padding is added programmatically
because in freeform window mode, it's possible for the view to
transition from vertically to horizontally.

This CL doesn't address the issue where the color options may
appear smaller than expected based on the window size in freeform
mode.

Bug: 300679192
Flag: EXEMPT bugfix
Test: Manually. See screenshots.
freeform landscape: http://screen/6cSUkexrJCYNhJS
freeform portrait: http://screen/3NRjoPnzvhZiiMG
phone original: http://screen/7kEWQsD5CA2Sjau
phone updated: http://screen/4FpjJHAb9RQPehq
tablet landscape original: http://screen/7fNAba2KfapvVp3
tablet landscape updated: http://screen/8XUb3hRm9PP9vZ2
tablet portrait original: http://screen/7JNmuCEoqpG5Zsa
tablet portrait updated: http://screen/9fS4ZZEJaDmntHz

Change-Id: Id00278ee473dacfca9d9dd746614f368d321e861