move click handler to button. when on the icon it wasn't triggered in firefox

What does this MR do?

Allow closing the Cycle Analytics intro box in firefox

Are there points in the code the reviewer needs to double check?

not really, click handler belongs on button

Why was this MR needed?

regression

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
  • All builds are passing
• Conform by the merge request performance guides
• Conform by the style guides
• Branch has no merge conflicts with master (if it does - rebase it please)
• Squashed related commits together

What are the relevant issue numbers?

Closes #35164 (closed)