fix(combo-box): ai-label with close style

[ariellalgilmore]

Closes #18392

before (overlapping AILabel and Close)

after (spaced out evenly)

Changelog

Changed

• update styles to look for inner wrapper first then ai-label. remove duplicate styles

Testing / Reviewing

confirm combobox ai-label is styled correctly
make sure other list-box components aren't effected with ai-label styles

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.16%. Comparing base (9ec6285) to head (b0379d7).
Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #18432   +/-   ##
=======================================
  Coverage   84.16%   84.16%           
=======================================
  Files         408      408           
  Lines       14449    14449           
  Branches     4696     4666   -30     
=======================================
  Hits        12161    12161           
+ Misses       2124     2123    -1     
- Partials      164      165    +1     

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[annawen1]

Are we fixing the issue in Web Components as well? This is what I see when I choose an option from the menu in WC
https://deploy-preview-18432--v11-carbon-web-components.netlify.app/?path=/story/components-combo-box--with-ai-label

[ariellalgilmore]

Are we fixing the issue in Web Components as well? This is what I see when I choose an option from the menu in WC https://deploy-preview-18432--v11-carbon-web-components.netlify.app/?path=/story/components-combo-box--with-ai-label

hmmm maybe i can comment this in the syncing epic...?

[2nikhiltom]

LGTM

[annawen1]

LGTM!