refactor(ExpandableCard): to use vanilla extract and drop emotion

[matthprost]

Summary

Type

• Refactor

Summarise concisely:

What is expected?

Refactor expandable card to drop emotion and use vanille extract

[changeset-bot]

🦋 Changeset detected

Latest commit: 6f40bd8

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 4 packages

Name	Type
@ultraviolet/ui	Minor
@ultraviolet/form	Major
@ultraviolet/nextjs	Major
@ultraviolet/plus	Major

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.22%. Comparing base (647bf54) to head (6f40bd8).
⚠️ Report is 9 commits behind head on beta.

Additional details and impacted files

@@            Coverage Diff             @@
##             beta    #5583      +/-   ##
==========================================
- Coverage   92.23%   92.22%   -0.02%     
==========================================
  Files         270      271       +1     
  Lines        7847     7830      -17     
  Branches     3288     3316      +28     
==========================================
- Hits         7238     7221      -17     
  Misses        609      609              

Files with missing lines	Coverage Δ
...ackages/ui/src/components/ExpandableCard/index.tsx	88.09% <100.00%> (-2.82%)	⬇️
...ges/ui/src/components/ExpandableCard/styles.css.ts	100.00% <100.00%> (ø)

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