refactor: rewrite internal keyboard utils in typescript

[adamalston]

Closes #18705

Rewrote the internal keyboard utilities in TypeScript.

Changelog

Changed

• Rewrote the internal keyboard utilities in TypeScript.
• Improved types in components that used the internal keyboard utilities.

Testing / Reviewing

yarn test packages/react

Reference commit: adamalston@f12a0e3

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[codecov]

Codecov Report

Attention: Patch coverage is 87.50000% with 1 line in your changes missing coverage. Please review.

Project coverage is 84.34%. Comparing base (3cf17ef) to head (070fc20).

Files with missing lines	Patch %	Lines
...react/src/components/FileUploader/FileUploader.tsx	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #18707      +/-   ##
==========================================
- Coverage   84.34%   84.34%   -0.01%     
==========================================
  Files         408      405       -3     
  Lines       14645    14598      -47     
  Branches     4821     4752      -69     
==========================================
- Hits        12352    12312      -40     
+ Misses       2132     2127       -5     
+ Partials      161      159       -2     

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