fix: Make translation test less flaky

[BrendanWalsh]

Test previously required one specific greeting to be returned by the translation service. Now making it slightly more flexible.

[BrendanWalsh]

/azp run

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 83.91%. Comparing base (38b53c6) to head (27bc80b).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2449      +/-   ##
==========================================
- Coverage   84.38%   83.91%   -0.48%     
==========================================
  Files         335      335              
  Lines       17690    17688       -2     
  Branches     1619     1610       -9     
==========================================
- Hits        14928    14842      -86     
- Misses       2762     2846      +84     

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[BrendanWalsh]

/azp run

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[Copilot]

Pull request overview

This PR addresses flakiness in translation service tests by replacing strict equality assertions with more flexible containment checks. The changes account for variation in translation service responses (e.g., different but equivalent Chinese greetings like "早上好" vs "早安"), which helps prevent test failures due to non-deterministic API behavior rather than actual bugs.

Key Changes:

• Replaced exact string matches (=== or ==) with flexible assertions using contains() checks that accept multiple valid translation alternatives
• Added intermediate variables to store results before asserting on them for better readability
• Introduced alternative acceptable translations for Chinese phrases (e.g., "嗨" or "你好" for greetings, "再见" or "拜拜" for goodbye)

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[BrendanWalsh]

/azp run

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