common: disable lockscreen using system property

In Android 14, the overlay mechanism using def_lockscreen_disabled=true is not sufficient anymore.

Fortunately, there is a system property read by the settings provider which allows us to disable the lock screen.

Set that system property to bypass the lockscreen again, which is necessary for CTS testing.

Signed-off-by: Mattijs Korpershoek mkorpershoek@baylibre.com