In this change we disable:
1. Security Center Entry point
2. PrivateSpaceAuthenticationActivity
when private profile is not present and cannot be added.
Additionally, the intent exposing PrivateSpaceAuthenticationActivity
is also non-exported and changed to a better name.
Bug: 328578044
Test: Manual build and flash
Change-Id: I13d298316c6d719d0b06e4969989ea1da83dd4c6