Exclude status bar subpanels from AppZoomOut.

We use this type for some of our dialogs in the Shade, and we don't
want them to be zoomed out.

Fix: 396211847
Flag: com.android.systemui.spatial_model_app_pushback
Test: manual with hearing devices and screen record dialogs
Change-Id: I4d8d700e327b6983aa4ea9a10682f0344afea71d