Quarantine file upload spec in relative url jobs

What does this MR do?

ee/browser_ui/2_plan/group_wiki/file_upload_group_wiki_page_spec.rb and browser_ui/2_plan/project_wiki/project_based_file_upload_spec.rb fails due to a bug #409542 (comment 1377359486) on relative URL jobs.

The MR is to quarantine specs to reduce the noise.

E2E Test Failure issue(s)

• Failure in browser_ui/2_plan/project_wiki/proje... (#409541)
• Failure in ee/browser_ui/2_plan/group_wiki/file... (#409542)

Check-list

• General code guidelines check-list
  • Code review guidelines
  • Style guides
• Quarantine test check-list
  • Follow the Quarantining Tests guide.
  • Confirm the test has a quarantine: tag with the specified quarantine type.
  • Note if the test should be quarantined for a specific environment.
  • (Optionally) In case of an emergency (e.g. blocked deployments), consider adding labels to pick into auto-deploy (Pick into auto-deploy priority1 severity1).
• Dequarantine test check-list
  • Follow the Dequarantining Tests guide.
  • Confirm the test consistently passes on the target GitLab environment(s).
• To ensure a faster turnaround, ask in the #quality_maintainers Slack channel for someone to review and merge the merge request, rather than assigning it directly.