chore: Button Style API refactor

[teodoranemes]

Description

Added style file for the Button component to maintain consistency across all Style API Components.

How has this been tested?

Review checklist

The following items are to be evaluated by the author(s) and the reviewer(s).

Correctness

• Changes include appropriate documentation updates.
• Changes are backward-compatible if not indicated, see CONTRIBUTING.md.
• Changes do not include unsupported browser features, see CONTRIBUTING.md.
• Changes were manually tested for accessibility, see accessibility guidelines.

Security

• If the code handles URLs: all URLs are validated through the checkSafeUrl function.

Testing

• Changes are covered with new/existing unit tests?
• Changes are covered with new/existing integration tests?

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.01%. Comparing base (eeb11db) to head (fb954cb).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3752   +/-   ##
=======================================
  Coverage   97.01%   97.01%           
=======================================
  Files         825      826    +1     
  Lines       23963    23965    +2     
  Branches     8427     8357   -70     
=======================================
+ Hits        23248    23250    +2     
  Misses        666      666           
  Partials       49       49           

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[avinashbot]

Just a minor style comment about the usages of ?. (approving anyway since it's just a style thing). Other comment is just for me.

[avinashbot]

Minor: just out of curiosity, I know we have this for bundlers/minifiers to remove, but I don't know how complex this is allowed to be. For example, are you allowed to combine it with other conditionals like this?

Do you know if there's a way to test this? Got curious, did some research:

• Webpack uses Terser, which removes replaced conditionals
  • https://webpack.js.org/guides/production/
  • https://terser.org/docs/miscellaneous/#conditional-compilation
• Vite uses esbuild, which does not
  • https://vite.dev/config/build-options.html#build-minify
  • https://esbuild.github.io/api/#minify-considerations:~:text=The%20minification%20algorithm%20in%20esbuild%20does%20not%20yet%20do%20advanced%20code%20optimizations

Oh well, probably need to come up with something smarter eventually. But that's for later, this isn't a valid reason to block this PR.