Showing the notification icon properly now when the pulse is suppressed

Previously the notification would be hidden so if the user would pull
out the phone from the pocket, they might not see what notification
actually alerted.

Bug: 138336424
Test: add notification while on AOD, block prox sensor, see icon
Change-Id: I101640c9d0226948e44a4bf36a7ca91dd135fe66
Merged-In: I8f7bd7a6a0562942ed3e12f28705043722d177e8
(cherry picked from commit 15803b51)