Merge RTCStatsIceCandidatePairState enum

[teoli2003]

Two rationales for this PR:

1. We are removing specific pages for enums and mixins as they are not entities visible in browsers; they are specification artifacts
2. As part of the page-type project ([page types] Define page types for Web/API #16255) we want to get rid of the RTCStatsIceCandidatePairState page.

This page delete the RTCStatsIceCandidatePairState by redirecting it, and add its information in the RTCIceCandidatePairStats.state.

It also removes it from GroupData.json. I also cleaned GroupData.json type entry for WebRTC: the only entries left there are either existing pages or enums with mentions (that are red links) elsewhere in MDN. In both cases, we will clean this in follow-up PRs.

[github-actions]

Preview URLs

• https://pr17224.content.dev.mdn.mozit.cloud/en-US/docs/Web/API/RTCIceCandidatePairStats/state
• https://pr17224.content.dev.mdn.mozit.cloud/en-US/docs/Web/API/RTCIceCandidatePairStats

Flaws

Note! 1 document with no flaws that don't need to be listed. 🎉

URL: /en-US/docs/Web/API/RTCIceCandidatePairStats
Title: RTCIceCandidatePairStats
on GitHub
Flaw count: 5

• macros:
  • /en-US/docs/Glossary/IP does not exist
  • /en-US/docs/Glossary/IP does not exist
  • /en-US/docs/Web/API/RTCTransportStats does not exist
  • /en-US/docs/Web/API/RTCTransportStats does not exist
  • /en-US/docs/Web/API/RTCTransportStats/selectedCandidatePairId does not exist

External URLs

URL: /en-US/docs/Web/API/RTCIceCandidatePairStats
Title: RTCIceCandidatePairStats
on GitHub

No new external URLs

---

URL: /en-US/docs/Web/API/RTCIceCandidatePairStats/state
Title: RTCIceCandidatePairStats.state
on GitHub

No new external URLs

(this comment was updated 2022-06-13 06:14:34.557043)