fix(events): fix events simulator CLI

[glevco]

Motivation

The events simulator CLI is not working.

Acceptance Criteria

• Fix import problem in events simulator CLI and add a test for it.

Checklist

• If you are requesting a merge into master, confirm this code is production-ready and can be included in future releases as soon as it gets merged

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (c0364ba) 85.31% compared to head (481d3fe) 85.25%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #907      +/-   ##
==========================================
- Coverage   85.31%   85.25%   -0.07%     
==========================================
  Files         284      284              
  Lines       22330    22330              
  Branches     3367     3367              
==========================================
- Hits        19051    19037      -14     
- Misses       2605     2616      +11     
- Partials      674      677       +3     

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