Tool stops with an error when processing an orchestration with multiple correlation sets

## Description

The tool displays an error and stops if you attempt to parse an orchestration that has multiple Initializing Correlation Sets (on a Receive shape) or multiple Initializing/Following Correlation Sets (on a Send shape).
The error displayed is:

The tool does not generate any output for that orchestration, even if the `--no-abort` flag is used.

## Environment and tool versions

- AIM Tool Version (aim --version): **0.5.1-beta.2020102844785**
- Windows Version (systeminfo): **10.0.19041 N/A Build 19041**
- Shell: **PowerShell**
- Shell Version ($PSVersionTable | bash --version): **5.1.19041.610**

## Repro steps

Create an orchestration that has at least 2 correlation sets as the Initializing Correlation Sets property on an activatable Receive shape:

## Expected result

Tool successfully processes the MSI with no errors.

## Current result

The tool stops and outputs an error.