Fix hasUseBackgroundNetworksPermission issue.

PermissionMonitor#hasUseBackgroundNetworksPermission only uses
the first package name of the uid for checking permission.
This is incorrect since each package declared different
permissions. So using the mApps which already checked both
network and using restricted network permissions. If uid is in
the mApps list that means uid has one of permission at least.

Bug: 135897744
Test: atest FrameworksNetTests
Change-Id: I3500a03ce06b5b822311ad0c67b606ce4039216a