[Settings] Data warning & limit UI should be configuable when running out of limit

Should access API which is irrelated to status of data limit.
Changing from API isDataEnabledForApn(ApnSetting.TYPE_DEFAULT)
into isDataEnabledForReason(TelephonyManager.DATA_ENABLED_REASON_USER).

Bug: 223361190
Change-Id: Iada89de38e9db3706a944c7a5b5f8a3e87d415e5
Test: Manual
(cherry picked from commit 7e530dda)