[-1] Show toast when user trys to swipe to -1 on extreme battery saver mode

Fix: 355485335
Flag: com.android.launcher3.use_activity_overlay
Test: manual - record a video
Change-Id: I79a3ece2fb2c0d1eddac0e4f91274ffe222e317f

src_plugins/com/android/systemui/plugins/shared/LauncherOverlayManager.java

@@ -49,6 +49,8 @@ public interface LauncherOverlayManager {
 
     default void onActivityDestroyed() { }
 
+    default void onDisallowSwipeToMinusOnePage() {}
+
     /**
      * @deprecated use LauncherOverlayTouchProxy directly
      */