Add a new API to fetch pending job reasons history.

JobScheduler.getPendingJobReasonsHistory() will allow an app to query
its constraint history for a particular job. This will only be a
limited historical view of the constraints (currently last 10
constraint changes).

Bug: 372031023
Test: atest JobSchedulingTest
Flag: android.app.job.get_pending_job_reasons_history_api
Change-Id: I9f858925e990e6dfd6db1b79b9f6cff36d1761e9