Make external display status bar non-interactive if shade doesn't go around.

This CL prevents hover highlights and notification shade triggers from
external display status bar.

Bug: 414763573
Flag: com.android.systemui.shared.status_bar_connected_displays
Test: atest com.android.systemui.statusbar.phone.PhoneStatusBarViewControllerTest
Test: atest com.android.systemui.statusbar.phone.PhoneStatusBarViewTest
Change-Id: I36bb74c2b67e07fb1d2ddcc33b3c432f35f8e996