Migrate OCCLUDED<->LOCKSCREEN alpha/translation

It is currently in NotificationPanelViewController and needs to be
migrated to use the new keyguard root view. Move that logic to the
corresponding transition view models.

Also add ConfigurationInteractor and refactor code to use this instead
of ConfigurationRepository.

Also remove unused KeyguardVisibility data class and methods.

Test: atest OccludedToLockscreenTransitionViewModelTest
LockscreenToOccludedTransitionViewModelTest
ConfigurationInteractorTest
Bug: 288081969
Flag: ACONFIG com.android.systemui.keyguard_shade_migration_nssl DEVELOPMENT

Change-Id: I87f02c4ba823ce366573ea5ba7fdf6114b14a53f