feat: add missing tests for webhooks feature

[jfcalvo]

Description

This PR adds some missing tests checking that webhook events are enqueued on background jobs when actions occurs inside Argilla app.

Refs #1836

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Refactor (change restructuring the codebase without changing functionality)
• Improvement (change adding some improvement to an existing functionality)
• Documentation update

How Has This Been Tested

• All tests should be passing.

Checklist

• I added relevant documentation
• I followed the style guidelines of this project
• I did a self-review of my code
• I made corresponding changes to the documentation
• I confirm My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• I have added relevant notes to the CHANGELOG.md file (See https://keepachangelog.com/)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.72%. Comparing base (d2cfbed) to head (73bafa1).
Report is 9 commits behind head on feat/add-webhooks-feature-branch.

Additional details and impacted files

@@                         Coverage Diff                          @@
##           feat/add-webhooks-feature-branch    #5537      +/-   ##
====================================================================
+ Coverage                             91.55%   91.72%   +0.16%     
====================================================================
  Files                                   159      159              
  Lines                                  6374     6382       +8     
====================================================================
+ Hits                                   5836     5854      +18     
+ Misses                                  538      528      -10     

Flag	Coverage Δ
argilla-server	91.72% <100.00%> (+0.16%)	⬆️

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[frascuchon]

This is working because the db session is shared by all the test components, right? Otherwise we should refresh the dataset instance before building the event?

[jfcalvo]

Exactly.