fix: APPS-2972 Reformat dates to exclude the leading zero on single digit dates

[jendiamond]

Connected to APPS-2972

• https://deploy-preview-638--ucla-library-storybook.netlify.app/?path=/story/section-teaser-list--dynamic-component Test for the Single Digit on Block Clipped Date
• https://deploy-preview-638--ucla-library-storybook.netlify.app/?path=/story/block-clipped-date--single-digit-date

Notes:

• src/utils/formatEventDay.js
  • update the format to have no leading zero on single digit days
• src/stories/SectionTeaserList.stories.js +.update this story to contain a date with a single digit

Checklist:

• [x] I checked that it is working locally in the storybook
• [x] I checked that it is working locally in the library-website-nuxt dev server
• [x] I added a screenshot of it working

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🚀 Deployed on https://deploy-preview-638--ucla-library-storybook.netlify.app

[pghorpade]

:tada: This PR is included in version 3.29.7 :tada:

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot :package::rocket: