chore(ui): remove deprecation warning about built-in language support

[jikkai]

Pull Request Checklist

• Related tickets or issues have been linked in the PR description (or missing issue).
• Naming convention is followed (do please check it especially when you created new plugins, commands and resources).
• Unit tests have been added for the changes (if applicable).
• Breaking changes have been documented (or no breaking changes introduced in this PR).

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 29.24%. Comparing base (a6761dd) to head (83246a3).

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #2353      +/-   ##
==========================================
- Coverage   29.25%   29.24%   -0.02%     
==========================================
  Files        1515     1515              
  Lines       76700    76698       -2     
  Branches    15929    15929              
==========================================
- Hits        22441    22431      -10     
- Misses      54259    54267       +8     

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