SysUI: disable quick QS when QS is disabled.

When StatusBarManager.DISABLE2_QUICK_SETTINGS is set, make sure the
quick Quick Settings panel is also disabled, in addition to the full
Quick Settings panel. Also disable the Settings button and the
ExpandableIndicator in this case.

This is to make sure the UI conforms to LockTask requirements.

Bug: 65813398
Test: CTS verifier > Managed provisioning > Device owner tests
      > LockTask UI > Enable notifications
Test: runtest systemui

Change-Id: Icca0dce93e17ce9b10c7408aebbd7cbad47b9d58