Move dozing related methods out of ShadeController

isDozing is already provided by StatusBarStateController.
wakeUpIfDozing doesn't need to be in ShadeController and can stay in
StatusBar for now (potentially move into a dozing related controller in
the future?)

Bug: 144702768
Test: manual, atest SystemUITests
Change-Id: I8f7d6a452388308de5fdd1adfbcd200fd3076a2f