test: fix flaky event handler test

[gruebel]

This PR

• now it guarantees the actual handler execuion

[gemini-code-assist]

Code Review

This pull request refactors a test in tests/test_client.py to use separate threading events and wrapper functions for tracking the execution of raising and recording handlers. The reviewer suggests a cleaner approach by leveraging the side_effect parameter of MagicMock to trigger the threading events directly, which eliminates the need for the verbose wrapper functions.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.34%. Comparing base (0a96426) to head (5fa753b).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #609   +/-   ##
=======================================
  Coverage   98.34%   98.34%           
=======================================
  Files          45       45           
  Lines        2477     2483    +6     
=======================================
+ Hits         2436     2442    +6     
  Misses         41       41           

Flag	Coverage Δ
unittests	98.34% <100.00%> (+<0.01%)	⬆️

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