Protect ConnectivityService from SecurityException in permission check.

ConnectivityService currently calls
LocationPermissionChecker#checkLocationPermission. This method call
throws a SecurityException if the given package name and UID do not
match. This permission check is made from the ConnectivityService
Thread, so any Exception being thrown will crash the SystemServer. This
is not acceptable, so surround the permission check in a try-catch in
case any SecurityExceptions are thrown.

Bug: 149119324
Test: atest ConnectivityServiceTest
Change-Id: Ibe2874f2a5249432270aa1b9eb7d004bbba35ac2