Background: https://github.com/orgs/mdn/discussions/782

We have migrated all code from https://github.com/mdn/interactive-examples into page content.

There's been a warning on the repo since mdn/interactive-examples#2900, so it's probably time to set the repository to read-only.

Tasks

• Communicate this change & thank contribs to that repo (@pransh15?)
• Double-check if any leftover references to the repository
  • chore: Remove references to mdn/interactive-examples repo content#41601
• archive https://github.com/mdn/interactive-examples