[IdleController] Support dock scenario on idle or active judgement

In the current design, IdleController of Job service considers devices as ‘idle’ after 71 minutes of screen off. But under docking use scenario, devices screen might remain on for a very long time and it’s not necessary implying the device being interactive with users.
So create a mechanism for device to enter the ‘idle’ state that JobScheduler can kick off idle tasks.

Bug: 79183658
Test: atest DeviceStatesTest
Change-Id: I5b307ca51e28ffca63f79a9c43984c3b76e51629