Fixed Twitter/X embeds

[sagzy]

With the Twitter → X rebrand, the Twitter widget moved from being hosted on platform.twitter.com to new being hosted on platform.x.com.

With this change, both legacy and new URLs are supported as widget hosts. Also cleaned up the unnecessary allowedScriptDomains: ['twitter.com'].

[coderabbitai]

Walkthrough

The HTML sanitizer now allowlists scripts from platform.twitter.com and platform.x.com, replacing the previous script-domain option. The related unit test adds Twitter and X script tags alongside a disallowed script and verifies that only the allowed scripts and paragraph content remain after sanitization.

Estimated code review effort: 1 (Trivial) | ~5 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title clearly matches the main change: updating Twitter/X embed support.
Description check	✅ Passed	The description accurately describes the host migration and allowlist cleanup in the changeset.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch agent/fix-x-embeds

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