fix(infra): Fix test_dual_write test pollution causing flakes

[rbro112]

Fixes the new #1 offending flaky test found with shuffle-tests, test_dual_write.

The underlying issue was a mutation of global state that would only be hit when test_dual_write__min_zero was ran before test_dual_write. This fixes this with a proper copy/mutation

Repro'd and confirmed fixed with

pytest tests/sentry/workflow_engine/handlers/condition/test_issue_occurrences_handler.py::TestIssueOccurrencesCondition::test_dual_write__min_zero tests/sentry/workflow_engine/handlers/condition/test_issue_occurrences_handler.py::TestIssueOccurrencesCondition::test_dual_write -v

[rbro112]

• fix(infra): Fix test_dual_write test pollution causing flakes #104741 👈 (View in Graphite)
• master

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@             Coverage Diff             @@
##           master   #104741      +/-   ##
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- Coverage   80.60%    80.48%   -0.12%     
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  Files        9356      9351       -5     
  Lines      403999    401700    -2299     
  Branches    25813     25813              
===========================================
- Hits       325638    323305    -2333     
- Misses      77919     77953      +34     
  Partials      442       442