fix: banner onclick on mobile now links to the desired route

[AGMASO]

General Changes

• Fixed banner link issue on mobile (was not redirecting anywhere).

• Made the entire banner clickable only on sm screens, linking to the correct route.

• On larger screens, the banner now displays the button normally.

Developer Notes

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Reviewer Checklist

Please ensure you, as the reviewer(s), have gone through this checklist to ensure that the code changes are ready to ship safely and to help mitigate any downstream issues that may occur.

• [ ] End-to-end tests are passing without any errors
• [ ] Code changes do not significantly increase the application bundle size
• [ ] If there are new 3rd-party packages, they do not introduce potential security threats
• [ ] If there are new environment variables being added, they have been added to the .env.example file as well as the pertinant .github/actions/* files
• [ ] There are no CI changes, or they have been approved by the DevOps and Engineering team(s)