Add wait time for screen state changed

This is a flaky test in some poor perfomence device. We should wait more
time for DeviceIdlenessTracker to receive SCREEN ON/OFF broadcast

Bug:242271304

Test:run cts -m CtsJobSchedulerTestCases -t
android.jobscheduler.cts.JobThrottlingTest#testRestrictingStopReason_RestrictedBucket

Signed-off-by: duanyangqi <duanyangqi@xiaomi.com>
Change-Id: Id307a602f14958341720197fe63616c7bbb62685
1 file changed