forward fix VoipCallMonitor regression

All the voip tests that verify FGS is gained started failing.
Upon investigation, a recent change mistakenly passed in the
UID instead of PID. This caused the ActiveService class to
hit a NPE when granting FGS.

Flag: EXEMPT fixes regression
Fixes: 397823061
Test: atest android.telecom.cts.cuj.app.integration.
            CallStyleNotificationsTest
	    #testFGS_twoCalls_TransactionalVoipAppMain
Change-Id: If08a4c1c2b350b116b95f825a42198dd7347b145