docs(realtimekit): fix web core reference to have correct typical names and only expose useful methods

[ravindra-cloudflare]

Summary

1. Web Core Reference for RealtimeKit team was harder to understand due to the lack of proper typicalnames.
2. Indexing that gets shown on right was wrong.
3. A lot of internal only methods were documented that could easily break client implementations.
4. Files like src/content/docs/realtime/realtimekit/core/api-reference/RTKSelfMedia.md were poorly documented.
5. Files like RTKParticipantsMap.md were not even useful for clients as they cannot access the raw map directly.
6. Added redirect for the deleted file RTKParticipantsMap.
7. This code is autogenerated based on changes that were done in RealtimeKit Web Core SDK Repo.

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Documentation checklist

• Is there a changelog entry (guidelines)? If you don't add one for something awesome and new (however small) — how will our customers find out? Changelogs are automatically posted to RSS feeds, the Discord, and X.
• The change adheres to the documentation style guide.
• If a larger change - such as adding a new page- an issue has been opened in relation to any incorrect or out of date information that this PR fixes.
• Files which have changed name or location have been allocated redirects.

[cloudflare-docs-bot]

Review

✅ No issues found in commit 787155c.

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[github-actions]

This pull request requires reviews from CODEOWNERS as it changes files that match the following patterns:

Pattern	Owners
/public/__redirects	@cloudflare/content-engineering, @cloudflare/product-owners
/src/content/docs/realtime/	@cloudflare/product-owners, @cloudflare/realtime, @cloudflare/RealtimeKit, @roerohan, @ravindra-cloudflare

[github-actions]

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[github-actions]

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