fix(Toast): some styling fixes for Toast banners

[tfechtnerbh]

Description

Toast fixed banner notification animation causes banner to get cut off and hide the border. Update position of close button to vertically align middle.

Verify that...

• [x] Any related demos were added and npm start and npm run build still works
• [x] New demos work in Safari, Chrome and Firefox
• [x] npm run lint passes
• [x] npm test passes and code coverage is increased
• [x] npm run build still works

Bullhorn Internal Developers

• [ ] Run Novo Automation

Screenshots

[github-actions[bot]]

Visit the preview URL for this PR (updated for commit 5a603fd):

https://novo-elements--pr1571-f-toast-ui-updates-yghy1g7w.web.app

_{(expires Wed, 07 Aug 2024 09:15:25 GMT)}

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