Fixes Selector component size padding

[tareqlol]

Purpose

The Selector component uses incorrect padding custom variables for kilo and mega.
The Selector description does not wrap

Approach and changes

• Adjust the padding to the size that correlates with the passed size property.
• Adjust the description to wrap.

Definition of done

• Development completed
• Reviewers assigned
• Unit and integration tests
• Meets minimum browser support
• Meets accessibility requirements

[changeset-bot]

🦋 Changeset detected

Latest commit: cc49ae6

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

This PR includes changesets to release 1 package

Name	Type
@sumup/circuit-ui	Patch

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Name	Status	Preview	Comments	Updated (UTC)
oss-circuit-ui	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Sep 26, 2023 9:52am

[codecov]

Codecov Report

Merging #2255 (cc49ae6) into main (e2f8230) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main    #2255   +/-   ##
=======================================
  Coverage   97.01%   97.01%           
=======================================
  Files         251      251           
  Lines       19833    19835    +2     
  Branches     1211     1211           
=======================================
+ Hits        19241    19243    +2     
  Misses        572      572           
  Partials       20       20           

Files	Coverage Δ
...ckages/circuit-ui/components/Selector/Selector.tsx	96.93% <100.00%> (+0.03%)	⬆️