Migrate view usages of getPeopleNotificationType to the adapter

Test: BundleEntryAdapterTest
Test: NotificationEntryAdapterTest
Test: NotificationMenuRowTest
Test: post bubble capable notifs, flag on/off
Bug: 395857098
Flag: com.android.systemui.notification_bundle_ui
Change-Id: I1ab8d746d50c1ea3d825f66a0f0f59645964e11b