Ask Perm Controller to set policy-fixed perms

Ask Perm Controller to set policy-fixed perms

This is much slower than the old way as we need to call into a different
process. On the other hand this handles the following cases correctly:
- foreground / background permissions
- pre-M apps
- split permissions

Test: CtsDevicePolicyManagerTestCases:com.android.cts.devicepolicy.MixedManagedProfileOwnerTest#testPermissionGrant,testPermissionPolicy,testPermissionMixedPolicies,testPermissionAppUpdate,testPermissionGrantPreMApp
Change-Id: I5cd139ad29e5b77b77b02e12c75eb774984a7759
Bug: 124128308