fix twitter facet rendering

[rosethornbush]

fixes twitter facet rendering so one facet can't rewrite markdown that was already inserted.

facets now render from the original text by index, which keeps hashtags, mentions, urls, and media removals from stepping on each other.

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Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	embedly-docs	8c3b448	Commit Preview URL Branch Preview URL	Jun 29 2026, 08:27 AM

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Latest commit: 8c3b448

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