Use Compose FooterActions directly in Scene

Instead of using the composable in QSImpl, instead directly compose it
into the scene (after flagging it off in QSImpl).

Test: manual
Test: atest QuickSettingsSceneViewModelTest
Test: atest QSImplTest
Fixes: 316570403
Flag: ACONFIG com.android.systemui.scene_container DEVELOPMENT

Change-Id: I8d764200527655381173fdc14f4b879a5482890e
7 files changed