Update the order of admins in PolicyEnforcementInfo

PolicyEnforcementInfo sorts the admins in constructor in a way that
supervision admin will be first one if it exists. To keep the behaviour
consistent with DPMS.getEnforcingAdminInternal, change the ordering in
following way: supervision admins -> DPC admins -> other admins.

Test:  atest FrameworksServicesTests:com.android.server.devicepolicy.PolicyEnforcementInfoTest
Flag: android.app.admin.flags.policy_transparency_refactor_enabled
Bug: 414733570

Change-Id: Idf3f83c46f089b90e5f67a660736d2950b8c3524