Delay display DOZE on LS => AOD only if blanking is not needed

There is a brightness flickering when entering Always On Display (AOD)
from lock screen. The reason for this is that config_displayBlanksAfterDoze
is not read correctly when entering AOD from lock screen.

Checking shouldControlScreenOff() to know if blanking is needed.

Test: set config_displayBlanksAfterDoze and let device go to AOD from lock screen.
Bug: 245919479
Change-Id: I90c68d25d468f22d2c1a8c2c0c2ef5723f0bc7a6