feat(select): add new decorator prop

[alisonjoseph]

Closes #17997

Add decorator prop to Select and FluidSelect, deprecate slug prop
Fix style bugs with "revert" functionality in invalid/warn state
Fix AILabel style bug in FluidSelect

Changelog

New

• New decorator prop for Select & FluidSelect
• Add with AILabel story to FluidSelect

Changed

• Deprecate slug prop for Select & FluidSelect
• Updated styles for select to ensure proper alignment with all combination of states. Invalid, warn, revert
• Update styles for FluidSelect so AILabel is correctly placed

Testing / Reviewing

Review stories for...

• Select > with AI Label

• Form > with AI Label

• FluidSelect > with AI Label

• Remove test data from storybook

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.65%. Comparing base (b53f566) to head (0a3441d).
Report is 10 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #18107      +/-   ##
==========================================
+ Coverage   82.29%   82.65%   +0.35%     
==========================================
  Files         404      404              
  Lines       14276    14308      +32     
  Branches     4531     4615      +84     
==========================================
+ Hits        11749    11826      +77     
+ Misses       2365     2321      -44     
+ Partials      162      161       -1     

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[ariellalgilmore]

LGTM! 🎉 🎉 🎉