ci(pie-storybook): DSW-2468 Add testing deployment for storybook

[JoshuaNg2332]

Describe your changes (can list changeset entries if preferable)

• Added testing storybook deployment
• Fix Amplify teardown step which has duplicate env section

Note: No tests are currently directed to this test instance.

Author Checklist (complete before requesting a review)

• I have performed a self-review of my code
• I have reviewed the PIE Storybook/PIE Docs PR preview

Reviewer checklists (complete before approving)

Reviewer 1 - @siggerzz

• I have reviewed the PIE Storybook/PIE Docs PR preview

Reviewer 2

• I have reviewed the PIE Storybook/PIE Docs PR preview

[changeset-bot]

⚠️ No Changeset found

Latest commit: 8d19744

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