Fix issue where notif wouldn't HUN

DozeSensors and DozeTriggers have code that perform proximity
checks in slightly different ways. DozeSensors was updated as
part of ag/9185335 bug DozeTriggers wasn't.

Bug: 9185335
Fixes: 140701062
Test: partially cover prox, send notification, look at screen
Change-Id: Ic85181abb3edd4c77c427faefa4cd6b9c35b498f