Allow adverts to be inserted between comments slots on mobile crossword pages

[domlander]

What is the value of this and can you measure success?

• A positive impact on revenue

What does this change?

• Allows ads to be inserted by the commercial code on mobile crossword pages, by using Custom Events.
• Fires a comments-loaded custom event when comments have loaded
• Fires a comments-state-change custom event when the either of the following has changed
  • The comments page
  • The comments sort order

Note: It may be easier to review this commit by commit: The first commit is prettier, the following have the (few) changes

Screenshots

Before	After

Checklist

• [x] Tested locally, and on CODE if necessary
• [x] Will not break dotcom-rendering
• [x] Will not break our database – if updating CAPI, updated and committed the database files
• [x] Meets our accessibility standards
  • [ ] Tested with screen reader
  • [ ] Navigable with keyboard
  • [ ] Colour contrast passed

[github-actions[bot]]

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From guardian/actions-riff-raff.

[prout-bot]

Seen on ADMIN-PROD (merged by @domlander 13 minutes and 36 seconds ago)

• Check your changes on www.theguardian.com ✔️
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[prout-bot]

Seen on FRONTS-PROD (merged by @domlander 13 minutes and 46 seconds ago)

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