Don't reset brightness when going into AOD_PAUSED

We don't want the brightness to change right before
the display goes off

Fixes: 228285716
Test: manually cover proximity sensor and wait
Test: atest DozeScreenBrightnessTest
for the display to turn off

Change-Id: I0980f223e7ae86afcc0d3a3a8c93e57d8883e281
2 files changed