`devops::release` issues without a category label

Attention @ogolowinski and @cstasik, The following issues have been identified in the devops::release stage that do not have a category label. These should be applied with urgency so that important issues are not being lost track of.

• #13194 Use HTML5 form validation for inputs in feature flag manage ~"Accepting merge requests", ~"Release", ~"devops::release", frontend, ~"technical debt"
• #11649 (closed) (confidential) ~"(confidential)"