test(carousel): adds test to increase coverage

[AlexanderMelox]

Closes #6261

This PR adds more test coverage

How did you test and verify your work?

Running local test scripts

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.86%. Comparing base (9d07dab) to head (60d9b27).
Report is 10 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6393      +/-   ##
==========================================
+ Coverage   79.84%   79.86%   +0.02%     
==========================================
  Files         394      394              
  Lines       12877    12877              
  Branches     4258     4258              
==========================================
+ Hits        10281    10284       +3     
+ Misses       2596     2593       -3     

Components	Coverage Δ
ibm-products	∅ <ø> (∅)
ibm-products-web-components	∅ <ø> (∅)

[anamikaanu96]

Hey @AlexanderMelox The coverage is now 79.41%, can you try to increase upto 80% may be we can add handleKeydown/handleWheel.

[AlexanderMelox]

@anamikaanu96 Will be adding a few more tests,thanks

[AlexanderMelox]

@anamikaanu96 I realized that this is the component that I couldn't get the other tests to work. I spoke with @matthewgallo about this issue and i think the code coverage for this component is good enough. So we can merge this PR as is and add the 2% coverage another time. Thanks!

[amal-k-joy]

looks good.
We can create another issue to track for the remaining coverage.