Resolve "One-off migration for old types to new scoped types"

Expected impact

remove-type-feature-from-type-maintenance-resources:dry-run - https://gitlab.com/gitlab-org/quality/triage-ops/-/jobs/1724958828

• 1,682 opened issues
• 1,829 closed issues
• 265 opened MRs
• 11,448 merged MRs

set-type-maintenance-to-documentation-mrs:dry-run - https://gitlab.com/gitlab-org/quality/triage-ops/-/jobs/1724958838

• 19 opened MRs for gitlab-org/gitlab

• 12,596 merged MRs for gitlab-org/gitlab (it 500 errored for gitlab-org)

• 2,379 opened issues

• 5,717 closed issues

set-type-maintenance-to-security-mrs:dry-run - https://gitlab.com/gitlab-org/quality/triage-ops/-/jobs/1720020234

• 18 opened MRs

• 2,115 merged MRs

• 299 opened issues

• 2,885 closed issues

Action items

• (If applicable) Add documentation to the handbook pages for Triage Operations =>
• (If applicable) Identify the affected groups and how to communicate to them:
  • /cc @person_or_group =>
  • Relevant Slack channels =>
  • Week-in-review

Closes #731 (closed)