Filter out SecuritySettings search results when alternative available.

When alternative fragment is shown for the security settings page, we
don't want to show search results that would lead to an unused security
settings page.

Test: manual
Test: atest SettingsUnitTests
Test: make RunSettingsRoboTests -j
Bug: 184613149
Change-Id: I525bd87d1ac6a24a7a26f59ae917e35ac39732e3

src/com/android/settings/security/SecuritySettings.java

@@ -31,6 +31,7 @@ import com.android.settings.biometrics.fingerprint.FingerprintStatusPreferenceCo
 import com.android.settings.dashboard.DashboardFragment;
 import com.android.settings.enterprise.EnterprisePrivacyPreferenceController;
 import com.android.settings.enterprise.FinancedPrivacyPreferenceController;
+import com.android.settings.overlay.FeatureFactory;
 import com.android.settings.search.BaseSearchIndexProvider;
 import com.android.settings.security.trustagent.ManageTrustAgentsPreferenceController;
 import com.android.settings.security.trustagent.TrustAgentListPreferenceController;
@@ -152,5 +153,11 @@ public class SecuritySettings extends DashboardFragment {
                     return buildPreferenceControllers(context, null /* lifecycle */,
                             null /* host*/);
                 }
+
+                @Override
+                protected boolean isPageSearchEnabled(Context context) {
+                    return !FeatureFactory.getFactory(context).getSecuritySettingsFeatureProvider()
+                            .hasAlternativeSecuritySettingsFragment();
+                }
             };
 }