Fix statusbar visibility wrt shade expansion in multiple displays

The statusbar was only considering the state of Scene container (or shade expansion), without caring about whether the shade window was on its own display.

This caused it to be hidden when the shade was expanded in another dispaly.

With this change, we're always showing the statusbar when the shade window is in another display.

Also note that the keyguard is always in the shade window, and once the device is locked it goes back to the default display.

Bug: 362719719
Bug: 397155459
Test: HomeStatusBarViewModelImplTest
Flag: com.android.systemui.shade_window_goes_around
Change-Id: I78323f206acc162f1150cf8c685ffdf87dccfc8b