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/accessibility/ShortcutServicePickerFragment.java

@@ -34,6 +34,7 @@ import android.text.TextUtils;
 import android.view.accessibility.AccessibilityManager;
 
 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
+import com.android.settings.R;
 import com.android.settings.applications.defaultapps.DefaultAppInfo;
 import com.android.settings.applications.defaultapps.DefaultAppPickerFragment;
 import com.android.settings.core.instrumentation.InstrumentedDialogFragment;
@@ -53,6 +54,11 @@ public class ShortcutServicePickerFragment extends DefaultAppPickerFragment {
         return MetricsEvent.ACCESSIBILITY_TOGGLE_GLOBAL_GESTURE;
     }
 
+    @Override
+    protected int getPreferenceScreenResId() {
+        return R.xml.accessibility_shortcut_service_settings;
+    }
+
     @Override
     protected List<? extends DefaultAppInfo> getCandidates() {
         final Context context = getContext();