Remove ZenModeController from NSSL Constructor

ZenModeController is now injected into the
NotificationStackScrollLayoutController and the information that the
NotificationStackSCrollLayout requires is passed into the relevant
method.

Bug: 147245740
Test: atest SystemUITests
Change-Id: Ice2f1628de903c2d4d114b4b0f230ad7c5f879eb
4 files changed