fix: APPS-3030 Adjust TwoColumn component spacing

[tinuola]

Connected to APPS-3030

Component Updated: TwoColLayoutWStickySidebar.vue

Notes:

• Added space/margin to the right of the sidebar column at tablet resolution
• Shifted the component to one-column at earlier breakpoint

https://deploy-preview-644--ucla-library-storybook.netlify.app/?path=/story/layout-2-column-layout-with-sticky-sidebar--event-series

Checklist:

• [x] I checked that it is working locally in the dev server
• [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
• [x] UX has reviewed and approved this
• [x] I requested a PR review from the Dev team
• [x] I used a conventional commit message
• [x] I assigned myself to this PR

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[github-actions[bot]]

🚀 Deployed on https://deploy-preview-644--ucla-library-storybook.netlify.app

[pghorpade]

:tada: This PR is included in version 3.31.3 :tada:

The release is available on:

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

Your semantic-release bot :package::rocket: