feat: adds fluidDropdown in WebComponents

[2nikhiltom]

Closes 20330

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As the author of this PR, before marking ready for review, confirm you:

• [ ] Reviewed every line of the diff
• [ ] Updated documentation and storybook examples
• [ ] Wrote passing tests that cover this change
• [ ] Addressed any impact on accessibility (a11y)
• [ ] Tested for cross-browser consistency
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Codecov Report

:white_check_mark: All modified and coverable lines are covered by tests. :white_check_mark: Project coverage is 92.61%. Comparing base (6e1243f) to head (c2c2472). :warning: Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #21101   +/-   ##
=======================================
  Coverage   92.60%   92.61%           
=======================================
  Files         515      515           
  Lines       38225    38225           
  Branches     5871     5867    -4     
=======================================
+ Hits        35399    35401    +2     
+ Misses       2676     2675    -1     
+ Partials      150      149    -1     

Flag	Coverage Δ
main-packages	85.61% <ø> (ø)
web-components	96.89% <ø> (+<0.01%)	:arrow_up:

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