Fix test_duplicate_values

[mpolson64]

Summary: Fixing test failure on main. Nondeterministic ordering causes this to be flaky as is, prefer set equality

Differential Revision: D53611974

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D53611974

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (3b9449f) 94.83% compared to head (a047b30) 94.83%.

:exclamation: Current head a047b30 differs from pull request most recent head 896e364. Consider uploading reports for the commit 896e364 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2191   +/-   ##
=======================================
  Coverage   94.83%   94.83%           
=======================================
  Files         465      465           
  Lines       46100    46100           
=======================================
  Hits        43721    43721           
  Misses       2379     2379           

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