Hide clone panel and file list when user is only a guest

What does this MR do?

Ensures guests can't see the "clone panel" and the file list of the repo

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

I modified a preexisting test, I'm not sure why the test was passing on master.
Build with old test (fail)
Build with new test (pass)

Why was this MR needed?

Guests could see the clone panel and the file list

Screenshots (if relevant)

N/A

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 #17489 (closed)

Closes #30432 (closed)

Closes #31426 (closed)