Dark theme twilight mode not initializing properly

When overriding night mode, changes dont apply. The fix is to make sure that the overrride is reset in situation where it doesnt apply anymore
Also, the other bug is that changes should apply when screen is off or in car mode, but was applying in car mode only

Test: UiModeManagerServiceTest
Bug: 158407234
Change-Id: I9023b16c6619ddd31954fbc0a0a527b36671d2ec