Stop marking apps as privileged if they are not signed properly.

Fixes: 311374917
Test: atest android.content.pm.cts.PackageManagerTest
Change-Id: I5b5b81cf43b06837a22c8dfd170a112106dd64c1
Merged-In: I5b5b81cf43b06837a22c8dfd170a112106dd64c1
(cherry picked from commit 3ee5dfdcba047051ce81dca0696d6ddfeafe2d98)
1 file changed