[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