Fix: Listeners not honoring multiple failures for subscription

[parag-pv]

Problem:

If a call fails when subscribing, the caller will get an error back.
However if they call again, then the caller will see success despite the listener never actually getting set.

First attempt:

PR #202 - Due to a race condition, the listenerId of a subsequent subscription was dropped.

Updated fix:

Replace promise.all with reduce method to fix race condition and local variable for storing listenerId