Creating flags to update the system restrictions admin dialog and restrict...

Creating flags to update the system restrictions admin dialog and restrict factory reset for supervision.

Bug: 399481325
Bug: 383624414
Test: N/A
Flag: android.app.supervision.flags.update_supervision_admin_dialog
Flag: android.app.supervision.flags.restrict_factory_reset
Change-Id: I9338fe9e5c2519a686a043cdace2bb9e41939a22