Fix/2203

[Devanshusisodiya]

Proposed changes

Refactored the check_unreferenced_events function to return correct error strings, instead of misclassifying them.

Fixes

#2203

Types of changes

What types of changes does your code introduce? (A breaking change is a fix or feature that would cause existing functionality and APIs to not work as expected.)
Put an x in the box that applies

• Non-breaking fix (non-breaking change which fixes an issue)
• Breaking fix (breaking change which fixes an issue)
• Non-breaking feature (non-breaking change which adds functionality)
• Breaking feature (breaking change which adds functionality)
• Refactor (non-breaking change which changes implementation)
• Messy (mixture of the above - requires explanation!)

Checklist

Put an x in the boxes that apply.

• I have read the CONTRIBUTING doc
• I am making a pull request against the main branch (left side). Also you should start your branch off our main.
• Lint and unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have locally run services that could be impacted and they do not present failures derived from my changes
• Public-facing documentation has been updated with the changes affected by this PR. Even if the provided contents are not in their final form, all significant information must be included.
• Any backwards-incompatible/breaking change has been clearly documented in the upgrading document.

Further comments

If this is a relatively large or complex change, kick off the discussion by explaining why you chose the solution you did and what alternatives you considered, etc...

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.42%. Comparing base (3b0b1a2) to head (3d37d6d).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2207   +/-   ##
=======================================
  Coverage   94.41%   94.42%           
=======================================
  Files         260      260           
  Lines       16065    16064    -1     
=======================================
  Hits        15168    15168           
+ Misses        897      896    -1     

Flag	Coverage Δ
unittests	94.42% <100.00%> (+<0.01%)	⬆️

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