Consider userId in transparent policy heuristic

We need to consider the current userId when checking the permission
for a specific app using PackageManager.

Flag: com.android.window.flags.enable_modals_fullscreen_with_permission
Bug: 401583497
Test: atest WMShellUnitTests:SystemModalsTransitionHandlerTest
Test: atest WMShellUnitTests:DesktopTasksControllerTest
Test: atest WMShellUnitTests:DesktopModeWindowDecorViewModelTests.
Test: atest WMShellUnitTests:DesktopModeCompatPolicyTest

Change-Id: I560de1bae4df6bea1325a5a7a3fd1dd55ae16170