Reduce spurious noteUidProcessState triggers

ActivityManagerService.noteUidProcessState is triggered on both
ProcessState and Capability changes, but only AppOpsService cares about
the Capability chage. Seperating out the method to handle just
ProcessState and ProcessState+Capability changes will reduce unnecessary
calls for the rest of the listeners.

Flag:EXEMPTED_bugfix
Fix: 392706859
Test: manual (Perfetto trace of a fixed workload will see a reduction in
binder calls to netd from MobileDataStats)

Change-Id: I65e81d3fb26e3682efce89c9d9bbe7989bf680cd