idle: makes sure screen is off if was off before
idle: makes sure screen is off if was off before

In the case where the device screen was off prior to the execution of
the workload, but the user did not set screen_off, the screen will be
turned on during the setup. Previously, it would remain on for the
subsequent execution, however the correct behavior is for the workload
to always restore the screen to its previous state.

ARM-software/workload-automation,setrofim/workload-automation,lisatn/workload-automation,ARM-software/workload-automation,lisatn/workload-automation,lisatn/workload-automation,ARM-software/workload-automation,lisatn/workload-automation,setrofim/workload-automation,setrofim/workload-automation,ARM-software/workload-automation,setrofim/workload-automation