Close permission dialog on outside touch

Change I78d8c78863bd6ff9c0b105595420e91b6b741754 untintentionally
changed this behaviour, this reverts back to the previous behaviour

Test: Manully verified that dialog closes when touching outside of the
permission dialog
Bug: 200801402

Change-Id: I37f328fc5c74de41f6db43818cc8163e54b04ccc