Use StatusBarTouchShadeDisplayPolicy as default one

This makes the shade window able to move between displays by default when the flag is enabled.

Bug: 362719719
Test: DragDownNotificationShadeOnOtherDisplay
Flag: com.android.systemui.shade_window_goes_around
Change-Id: Idca4d9b4f782572e82deb7e1cf1c955a5aed486e