fix quicksettings flip preference not sticking

Change-Id: I91f78f0413ebb8a7c5a1e617113dec1e54b82e8e
Settings: Lockscreen Notifications
[2/2] Losckscreen Notifications fixes

- Lockscreen Notifications: fix removal of pocketmode setting
from: https://github.com/AOSPAL/android_packages_apps_Settings/commit/b2ff326f86c6641486dc92de9e02c36a727f5040

Change-Id: Ic371e2b409de9c77c7b33aa1eead14cd0a0df563
Settings: LS Notifications dinamic width & blacklist options