Make sure to stop EJs when quota is finished.

If a job is started as an EJ, we should stop it once the EJ quota is
finished, regardless of remaining regular quota. If we don't, then the
job would get EJ privileges even though the app shouldn't be getting
them anymore.

Bug: 224533485
Test: atest CtsJobSchedulerTestCases:JobThrottlingTest#testRestrictingStopReason_ExpeditedQuota_noCharging
Test: atest CtsJobSchedulerTestCases:JobThrottlingTest#testRestrictingStopReason_ExpeditedQuota_startOnCharging
Test: atest CtsJobSchedulerTestCases
Change-Id: Ib11023c4e3c05f2b3512bd069bda953fdd9bd0b9