Resolve "Remove banner to customize experience"

What does this MR do?

It is removing the "customize experience" banner on the project dashboard for now until there is a solution to save the hidding into the database.

Why was this MR needed?

That we don't annoy people.

Screenshots (if relevant)

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Documentation created/updated
• API support added
• Tests added for this feature/bug
• Review
  • Has been reviewed by UX
  • Has been reviewed by Frontend
  • Has been reviewed by Backend
  • Has been reviewed by Database
• Conform by the merge request performance guides
• Conform by the style guides
• Squashed related commits together

What are the relevant issue numbers?

Closes #38088 (closed)