fix(Dropdown): Fix getSelectedIndexAfterMove recursion error

[MitchellNeedham]

Fix for #4462

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Here is a list of things that will help get it across the finish line:

• Run yarn lint locally to catch formatting errors. This will fix some errors automatically, commit and push any changes.
• Run yarn test locally to catch errors. This ensures all components still behave as they should.
• Run yarn start to run the doc site locally and try a few pages, ensuring everything is in good working order.
• Include tests when adding/changing behavior.

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Name	Status	Preview	Comments	Updated (UTC)
semantic-ui-react	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Feb 10, 2024 11:04am

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (c579cab) 99.50% compared to head (efc005d) 99.50%.
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #4463   +/-   ##
=======================================
  Coverage   99.50%   99.50%           
=======================================
  Files         186      186           
  Lines        3465     3467    +2     
=======================================
+ Hits         3448     3450    +2     
  Misses         17       17           

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