fix: pill: handle jsx when lineclamp is null or zero

[dkilgore-eightfold]

SUMMARY:

When lineClamp is null or 0, this causes a JSX exception. Update the expression to pass a null value to handle JSX. Updates storybook to include this test via default props.

JIRA TASK (Eightfold Employees Only):

ENG-41517

CHANGE TYPE:

• Bugfix Pull Request
• Feature Pull Request

TEST COVERAGE:

• Tests for this change already exist (Storybook)
• I have added unittests for this change

TEST PLAN:

Pull the PR branch and run yarn and yarn storybook. Verify the Pill stories behave as expected after a hard reload and a lineClamp value of 0.

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[codecov-commenter]

Codecov Report

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Patch has no changes to coverable lines.

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Additional details and impacted files

@@           Coverage Diff           @@
##             main     #515   +/-   ##
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  Coverage        ?   84.76%           
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  Files           ?      785           
  Lines           ?    16452           
  Branches        ?     5697           
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  Hits            ?    13946           
  Misses          ?     2440           
  Partials        ?       66           

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