fix: carousel: only handle wheel event when not using touchpad

[dkilgore-eightfold]

SUMMARY:

• Simplifies the scroll behavior of Carousel scroll mode by deferring touchpad scroll behavior to the browser, ensuring consistency
• Only prevent default when using vertical mouse wheel event triggered by a proper mouse

JIRA TASK (Eightfold Employees Only):

ENG-46812

CHANGE TYPE:

• Bugfix Pull Request
• Feature Pull Request

TEST COVERAGE:

• Tests for this change already exist
• I have added unittests for this change

TEST PLAN:

Pull the PR branch and run yarn and yarn storybook. Verify the Carousel stories behave as expected.

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