Resupport long compare

In ag/3554499 we made it so that comparisons of longs was supported.
That support was apparantly deleted by accident during a refactoring of
code, so this adds it back.

Bug: 73509837
Test: it gets used in run cts-dev -m CtsStatsdHostTestCases -t android.cts.statsd.alert.AnomalyDetectionTests#testCountAnomalyDetection
Change-Id: I3dbe7da61bbfb3e9982fd1e0cc7d4658b0168690