Resolve Capybara/VisibilityMatcher in ee/spec/features/epics/epic_show_spec.rb

• Please check this box if this contribution uses AI-generated content (including content generated by GitLab Duo features) as outlined in the GitLab DCO & CLA. As a benefit of being a GitLab Community Contributor, you receive complimentary access to GitLab Duo.

What does this MR do and why?

• Resolve Capybara/VisibilityMatcher in ee/spec/features/epics/epic_show_spec.rb
• Change implementation based on recommendation of rubocop (Use :all or :hidden instead of false)
  • from: visible: false to: visible: :hidden
  • from: visible: true to: visible: :visible

MR acceptance checklist

Evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.