Fix VVM registers phone state listener repeatedly

In case of OOS, VvmSimStateTracker can register phone state listener
repeatedly based on the broadcast ACTION_CARRIER_CONFIG_CHANGED.

To fix it, check if the listener is already registered for the phone
account handle.

Change-Id: I4af0f588e2b28f4ab37df1b5b0ae0b6e492e327b
Issue: FP3-A13#56
CRs-Fixed: 2905721
(cherry picked from commit fa25b8837d3f840260faf916c7b4164c311aef3a)
1 file changed