R4.0.5 Checker extension issues

[marcjohlic]

Link to Squad 2 R4.0.5 MVP Mural

Epic Details

• User Story: Users need to be assured that bugs and issues are being addressed appropriately
• Playback Demonstration: Checker updates and fixes will be demonstrated at the end of the Release
• Metric: how can we measure the impact of this change
• Comms: Updates and fixes will be addressed in Release notes in this GitHub repo

What project/section is the Epic for?

• [ ] able site - Toolkit
• [ ] a11y Checker - Assessment
• [x] a11y Checker
• [ ] checklist
• [ ] ACS
• [ ] other

Definition of Done

• [ ] All content has been reviewed for grammar, spelling, style and technical accuracy
• [ ] All code committed to main branch
• [ ] All unit tests pass (including accessibility)
• [ ] Demo works in staging environment
• [ ] At least one performance metric / monitor constructed