fix: flaky assignment test

[pwnage101]

No description provided.

[Copilot]

Pull request overview

Stabilizes a flaky content assignment task test by making the “start_date” trigger property deterministic via frozen time, aligning the expected Braze payload with the time-dependent logic in get_self_paced_normalized_start_date().

Changes:

• Freeze time for test_send_email_for_new_assignment to eliminate dependence on the wall clock.
• Replace the expected start_date from datetime.now()-derived to a fixed timestamp matching the frozen time.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.01%. Comparing base (2efc827) to head (875517d).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #103   +/-   ##
=======================================
  Coverage   84.01%   84.01%           
=======================================
  Files         144      144           
  Lines       12226    12226           
  Branches     1170     1170           
=======================================
  Hits        10272    10272           
  Misses       1625     1625           
  Partials      329      329           

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[Copilot]

Pull request overview

This pull request updates a Braze email task test to be deterministic by freezing the system time and aligning the expected start_date trigger property with the frozen timestamp.

Changes:

• Freeze time for test_send_email_for_new_assignment using freezegun.freeze_time.
• Replace the previously dynamic start_date expectation with a fixed value matching the frozen time.

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