Inform NPMS about the app coming to the TOP state early.

It's possible for an app to come to the TOP state before
the oomAdj computation is done and we cannot wait for
oomAdj computation to complete and then inform NPMS about
the state change. So, inform NPMS early about the state
change when we know the app is going to the TOP state.

Bug: 226299593
Test: atest tests/cts/hostside/src/com/android/cts/net/HostsideRestrictBackgroundNetworkTests.java
Change-Id: I5d582618652cead179c419f7fe084283dd89d514