Fix alarm expanding issues (correctly).

Use expandAlarm() directly instead of getView().
If alarm is not in view, no need to expand it explicitly, it'll
happen on its own when getView is called.

Bug: 10695073
Bug: 10840150
Change-Id: Ica8816b9770791b83c94f2c5dc349569f46d8e14
(cherry picked from commit d3859fa8)