Remove Numbering System preference if no corresponding locale.

- If locale has no multiple numbering systems, it shall not
   show the locale on list.
 - If there is no locale with numberung system, remove the entry of
   numbering system preference on UI.

Bug: b/274053189
Test: atest passed
Test: Manual test passed
Change-Id: If61c7e233630644e2d6245c5efd75d15d52cf94b

src/com/android/settings/regionalpreferences/NumberingSystemItemController.java

@@ -30,6 +30,7 @@ import androidx.preference.PreferenceScreen;
 
 import com.android.internal.app.LocaleHelper;
 import com.android.internal.app.LocalePicker;
+import com.android.internal.app.LocaleStore;
 import com.android.settings.core.BasePreferenceController;
 import com.android.settings.core.SubSettingLauncher;
 import com.android.settings.dashboard.DashboardFragment;
@@ -52,6 +53,8 @@ public class NumberingSystemItemController extends BasePreferenceController {
 
     public NumberingSystemItemController(Context context, Bundle argument) {
         super(context, "no_key");
+        // Initialize the supported languages to LocaleInfos
+        LocaleStore.fillCache(context);
         mOption = argument.getString(
                 RegionalPreferencesEntriesFragment.ARG_KEY_REGIONAL_PREFERENCE, "");
         mSelectedLanguage = argument.getString(
@@ -111,8 +114,12 @@ public class NumberingSystemItemController extends BasePreferenceController {
         // Get current system language list to show on screen.
         LocaleList localeList = LocaleList.getDefault();
         for (int i = 0; i < localeList.size(); i++) {
-            Preference pref = new Preference(mContext);
             Locale locale = localeList.get(i);
+            LocaleStore.LocaleInfo localeInfo = LocaleStore.getLocaleInfo(locale);
+            if (!localeInfo.hasNumberingSystems()) {
+                continue;
+            }
+            Preference pref = new Preference(mContext);
             pref.setTitle(LocaleHelper.getDisplayName(locale.stripExtensions(), locale, true));
             pref.setKey(locale.toLanguageTag());
             pref.setSummary(getNumberingSystem(locale));