Using proc state to determine foreground status.

uidActive is true for bound foreground services. We would like to put a
quota on jobs for those processes as well, so switching to proc state
allows finer-grained control.

Bug: 117846754
Bug: 111423978
Test: atest com.android.server.job.controllers.QuotaControllerTest
Change-Id: I69b474b3dc0dda7a4d2234d75fd9023c3f041b67