Adds user id support to the checkSignatures API

The checkSignatures API return false if target packages do not
install in the current user. This cl fixes the instrumentation
cannot be launched if the target package does not install in
the system user.

NoNonSdkCheck: An equivalent api is available in PackageManager.

Bug: 229979568
Bug: 216113658
Test: atest CrossUserPackageVisibilityTests
Test: atest PackageManagerTest
Test: atest PackageManagerTests
Test: atest OverlayManagerServiceImplTests
Test: atest OverlayManagerServiceImplRebootTests
Test: atest ShortcutManagerMultiuserTest#testSecondaryUser
Change-Id: Idd6afe400453af3259547a069efaf9c86ff1da38