Automatically enter hub from lockscreen when applicable

Depending on the user's chosen "when to start" setting, we will
automatically open the hub when the conditions are met.

Flag: com.android.systemui.glanceable_hub_v2
Test: atest CommunalInteractorTest
Test: atest CommunalSettingsRepositoryImplTest
Bug: 383208131
Change-Id: I077ad623dd5c1fe61962ea983faf38007892329f