Notify ImsService Status Callbacks correctly

Adds support in the ImsServiceController for multiple
Feature listeners for one feature. Also adds support for
signaling the ImsFeature to remove the binder callback when
the feature is removed.

Stops Phone from listening to IMS_SERVUICE_UP/DOWN when
using the ImsResolver.

Bug: 38001858
Test: Unit Tests
Merged-In: I920605b32160fdce9fcd3b4c0100804d3590397f
Change-Id: I920605b32160fdce9fcd3b4c0100804d3590397f