[SNS Logger][Blocked Waiting for Verification] Fix failed escalation count mismatch.

[ear-dev]

I can see in our alert room that we had 5 failed escalations on 9/22, however our event logging is only showing 3. Seems like we must have missed some flavors.

In the alert room we got:
2x: {"errorMessage":"Error getting Liveagent response.","error":
1x: {"errorMessage":"Error sending Liveagent chat request.","error":
1x: {"error":"","errorMessage":"Unable to reach Liveagent bot, it may be offline or disabled.",
1x: Status Code: 500 Response: {"error":"Error occurred while using Dialogflow Rest API.

It is unclear to me right now which 3 were properly caught by events. I can investigate.

[ear-dev]

NOTE: It is possible that @AlexanderKanakis 's close chat/event PRs will cover many if not most of these cases. We will wait until we deploy that to verify if we still have a mismatch.

relevant PRs here: https://github.com/WideChat/Apps.Salesforce.LiveAgent/pull/75/files

[ear-dev]

It looks like we have just one failed escalation event left to catch, and it is tracked here: #1333

I'm going to close this story for now.