Migrate BackActionInteractor setup from CentralSurfaces to Dagger

CentralSurfaces was calling setup its empty ShadeSurface impl instead
of the correct class bound in the dagger module, preventing the back
button from working.

Fixes: 367415673
Test: Manually checked Shade and back both with and without scenes
Flag: com.android.systemui.scene_container
Change-Id: I7506730f308eb7ef2cdf2204ec922196133cf55f