Account for unseen constraint combinations.

Don't force jobs to wait for constraint combinations that haven't been
seen in the recent past. By default, if a set of constraints have not
been seen together in the past 3 days, then assume they won't be
satisfied together and don't wait for those constraints to be met in
order to run a job. Other constraint combinations may still be valid, so
the job may be forced to wait for those.

Bug: 236261941
Bug: 299329948
Bug: 299346198
Test: atest CtsJobSchedulerTestCases:FlexibilityConstraintTest
Test: atest FrameworksMockingServicesTests:ConnectivityControllerTest
Test: atest FrameworksMockingServicesTests:FlexibilityControllerTest
Change-Id: I8f68b76afa2cc68e062f7ce09477aafb237dc6f1