Suppress emergency page search when needed.

When controller#shouldSuppressFromSearch returns true, suppresses page
search.

Fix: 268664782
Test: manual
Change-Id: Ida543ae47aed36380200d938ea31fe80195b7186

src/com/android/settings/emergency/EmergencyGestureSettings.java

@@ -54,8 +54,8 @@ public class EmergencyGestureSettings extends DashboardFragment {
                     final EmergencyGestureEntrypointPreferenceController controller =
                             new EmergencyGestureEntrypointPreferenceController(context,
                                     "dummy_emergency_gesture_pref_key");
-                    return !controller.isAvailable()
-                            || controller.shouldSuppressFromSearch();
+                    return controller.isAvailable()
+                            && !controller.shouldSuppressFromSearch();
                 }
             };
 }