Return DISABLED_FOR_USER in deviceinfo/simstatus availability if not admin user

The correct return when checking for the SIM status field availability
for non-admin users is DISABLED_FOR_USER.

UNSUPPORTED_ON_DEVICE should only be used when the setting is
unconditionally hidden as the device does not support the feature.

Bug: 395714454
Flag: EXEMPT bugfix
Test: atest SimStatusPreferenceControllerTest

Change-Id: I9bd290f1bdd73909be383a24f2c762d295089ff6