Make missed call notification a noisy notification

By making the notification noisy a missed call will trigger
the pulsing of the notification LED.

Currently there is nothing that indicates that a user missed
a call when the display is off.

Bug: 34696338
Test: Call the device, miss the call, confirm LED is pulsing.
Change-Id: Ic0d3831bc847d9189a7318ded9e0b1a2869c25e4