Add navigation button to banner

[lauracumming]

Summary
When not logged in the user can navigate to Rapid Router with a button in the banner, but not to Python Den

User story
_As a user wanting to just have a look at the games
_I would like to be able to easily access both products easily
_so that I can see if I want to register for an account

What pages will be changed?
Play page

Outcome/deliverable
button added to banner?

Tools
Figma

Concerns
Think about the marketing launch and whether we need to add anything else too.

Deadline
This sprint

Links
TBC

Reviewer
@SKairinos @faucomte97

People to contact
@lauracumming

[lauracumming]

https://www.figma.com/design/9pMg7hFzK5YkjcnmwZsFl1/Portal-UI?node-id=467-2896&t=ejHvx9iZBxg6xtqA-1

[faucomte97]

LGTU

[faucomte97]

Dev task created: ocadotechnology/codeforlife-portal#2373