Moving permission and flag changes out of root identity for AppCloning

IntentRedirection

Earlier the permission was being checked with system server's pid and
uid as we were clearing binder identity for finding the values of
AppCloningBuildingBlocks flag. Because of this the check was moot,
moving the check out, so that it uses callers pd and uid.

Bug: 281738146
Test: atest com.android.cts.appcloning.IntentRedirectionTest
Change-Id: I62642d2c7cd76912ae800b02688cdc91d1a78214