Fixed emergency alert not showing up issue

After receiving a out-of-bound geo-targeting
emergency alert, the device is not able to display
any kind of emergency alert anymore.

Fixed by properly handling out-of-bound alert so
state machine can properly return back to idle
state.

Bug: 139501531
Test: Manual
Change-Id: If32f8475cd45be01226758e2565c0008d0715e95
CRs-Fixed: 2556887