Have NetworkPolicyManagerService listen onLinkPropertiesChanged callback

In current design, NPMS listens onThresholdReached() callback to
call updateNetworkRulesNL(), however, this callback mwill not be
called if data usage is not updated. Thus, it will cause to no
iptables rule for new metered interfaces.

Have NPMS listen onLinkProperitesChanged() callback and call
updateNetworkRulesNL() if interfaces has changed to add iptables
rules for new metered interfaces.

Bug: 225971066
Test: HostsideRestrictBackgroundNetworkTests
      HostsideRestrictBackgroundNetworkTests# \
      testDataAndBatterySaverModes_meteredNetwork \
      --iterations 100
Change-Id: I49f999efc3fbe0a6a325ec138a3f060c7285e6ad