Allow reading min user aspect ratio value from different user

We allow other users to access one user's min aspect ratio
because the value is not sensitive information

Fix: 294995190
Fix: 296832456
Test: atest CrossUserPackageVisibilityTests
      atest PackageManagerServiceTest
      atest PackageManagerSettingsTests

Change-Id: Ib2740e4af54df10f5d1a2a646b81e03479436bf4