Fix units in tests.

The wait timeout was meant to be 60 seconds (written as 60_000
milliseconds), but the method actually expects values in seconds, so the
test was inadvertently waiting for 60,000 seconds.

Bug: 141645789
Test: atest CtsJobSchedulerTestCases:ConnectivityConstraintTest
Test: atest CtsJobSchedulerTestCases:JobThrottlingTest
Change-Id: Idf6ab6812560d44e2efd5e5b56544f4c4ca0bd81