feat: label: add support for custom buttons and type clean up

[dkilgore-eightfold]

SUMMARY:

The info button of the Label was rather brittle, this improves it a bit and add support for custom buttons.

labelButtons.mp4

JIRA TASK (Eightfold Employees Only):

ENG-29160

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 do yarn and yarn storybook. Verify the Label stories behave as expected

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[codecov-commenter]

Codecov Report

❗ No coverage uploaded for pull request base (main@7a6f1e8). Click here to learn what that means.
Patch has no changes to coverable lines.

Additional details and impacted files

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  Coverage        ?   89.28%           
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  Branches        ?     4395           
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  Hits            ?    11670           
  Misses          ?     1377           
  Partials        ?       24           

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