Update preference screen title.

- Add missing title to preference screen xml so that they will be used to
set the activity title when the fragment is launched.
- Also updated some incorrect preference screen titles.
- Overrides getTitle() in preference fragments that do not use the
preference screen xml.

Bug: 64564191
Test: blaze-bin/screenshots/android/i18nscreenshots/i18nscreenshots
Change-Id: Id72d5ddf18f0962bc484de8bbd847a2e55d6371e

src/com/android/settings/DeviceAdminSettings.java

@@ -49,6 +49,7 @@ import android.widget.ListView;
 import android.widget.TextView;
 
 import com.android.internal.logging.nano.MetricsProto;
+import com.android.settings.core.InstrumentedPreferenceFragment;
 import com.android.settings.core.instrumentation.Instrumentable;
 import com.android.settings.core.instrumentation.VisibilityLoggerMixin;
 
@@ -136,6 +137,9 @@ public class DeviceAdminSettings extends ListFragment implements Instrumentable
         super.onActivityCreated(savedInstanceState);
         setHasOptionsMenu(true);
         Utils.forceCustomPadding(getListView(), true /* additive padding */);
+        if (InstrumentedPreferenceFragment.usePreferenceScreenTitle()) {
+            getActivity().setTitle(R.string.manage_device_admin);
+        }
     }
 
     @Override