Make unlock dialog exit if the person taps outside of the dialog

Bug: 136049501
Test: Manually on IHU
Change-Id: Iabbca72bf65b5e93aafd53296d77a88ccaaf5dfd
Merged-in: Iabbca72bf65b5e93aafd53296d77a88ccaaf5dfd
(cherry picked from commit fe3efb667fd3ceafda97a28d6f4673960114c369)
3 files changed