Support EnforcingAdmin in addition to existing EnforcedAdmin in admin dialog controllers.

This allows restrictions set via the SUPERVISION role authority to be represented with the correct dialog customizations.

Test: atest SupervisedDeviceActionDisabledByAdminControllerTest
Flag: android.app.supervision.flags.deprecate_dpm_supervision_apis
Bug: 399481325
Change-Id: I5e20e90a90c20dc1e2d73dd551004f6db18ce673