[Update] Expose the regional preferences pages

1. Link ACTION_MEASUREMENT_SYSTEM_SETTINGS to MeasurementSystemItemFragment
2. Link ACTION_NUMBERING_SYSTEM_SETTINGS to NumberingPreferencesFragment
3. Link ACTION_REGION_SETTINGS to RegionPickerFragment
4. Deprecate NumberingPreferencesFragment

Bug: 381038747
Flag: android.provider.system_regional_preferences_api_enabled
Test: use test app to try intent ACTION, atest
Change-Id: Id76e589ce25ae5dfc3443948300c6c21ab30672c
diff --git a/src/com/android/settings/Settings.java b/src/com/android/settings/Settings.java
index aa52a2a..e373ccc 100644
--- a/src/com/android/settings/Settings.java
+++ b/src/com/android/settings/Settings.java
@@ -100,9 +100,12 @@
     public static class LocalePickerActivity extends SettingsActivity { /* empty */ }
     public static class LanguageSettingsActivity extends SettingsActivity { /* empty */ }
     /** Activity for the regional preferences settings. */
+    public static class RegionSettingsActivity extends SettingsActivity { /* empty */ }
     public static class RegionalPreferencesActivity extends SettingsActivity { /* empty */ }
     public static class TemperatureUnitSettingsActivity extends SettingsActivity { /* empty */ }
     public static class FirstDayOfWeekSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class MeasurementSystemSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class NumberingSystemSettingsActivity extends SettingsActivity { /* empty */ }
     public static class KeyboardSettingsActivity extends SettingsActivity { /* empty */ }
     /** Activity for the navigation mode settings. */
     public static class NavigationModeSettingsActivity extends SettingsActivity { /* empty */ }