Determine when to show communal based on hub specific setting.

This changelist updates the trigger logic for automatically showing
glanceable hub based on the newly introduced setting rather than the
screensaver setting.

Test: atest CommunalSettingsInteractorTest
Test: atest CommunalViewModelTest
Test: atest CommunalInteractorTest
Bug: 401001786
Flag: com.android.systemui.glanceable_hub_v2
Change-Id: I839c3e05ede148460d5d2b6f5b4bd13202f60699