This is disabled by default and leaves time (1 min) for processes to
finish running only if there are processes currently running, otherwise,
it goes into deep doze immediately.
Bug: 79955941
Bug: 109934270
Test: Turn on Battery Saver, enable quick doze feature, turn off screen
also run `atest BatterySaverPolicyTest`
also run `atest com.android.server.DeviceIdleControllerTest`
Change-Id: Iec0c8436134e18debfa4c71a8322a6c9cdb10846
b396ccf969