[Role Logic Move] Lift user from isPermissionAndAppOp

This change modifies the following methods:

- Permissions::isPermissionAndAppOpGranted[AsUser]

...by making them multi-user aware. I.e., lift any references to
Process.myUserHandle() out of them into method arguments. Also,
modify all callers to use a single "UserHandle user" variable.

Bug: 302563690
Test: atest CtsRoleTestCases
Change-Id: I671f665bcba4982dbbeb53a0218e2f7fe972f8a6