Merge 3 aconfig sub-flags into ui_rich_ongoing

- status_bar_notification_chips
- ui_rich_ongoing_force_expanded
- aod_ui_rich_ongoing

Flag: android.app.ui_rich_ongoing
Test: atest SystemUITests
Bug: 367705002
Change-Id: I57a941cd8c6dcc692870b02f0e7e51469a0ea975