Fix an issue where ContentKit iframes were not resizing.

[emmerich]

Upstream PR: https://github.com/GitbookIO/gitbook-x/pull/17042

[changeset-bot]

⚠️ No Changeset found

Latest commit: 6f36066

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[github-actions]

Summary of the deployments:

Version 1 (production)

Version	URL	Status
Latest commit	https://7f2de260.gitbook-open.pages.dev	✅
PR	https://pr2967.gitbook-open.pages.dev	✅

Version 2 (experimental)

Version	URL	Status
Vercel	https://gitbook-v2-6xbnnzi5o-gitbook.vercel.app	✅
Cloudflare	https://de7fe477-gitbook-open-v2-preview.gitbook.workers.dev	✅

Test content

Site	v1	v2
GitBook	https://7f2de260.gitbook-open.pages.dev/docs.gitbook.com	https://gitbook-v2-6xbnnzi5o-gitbook.vercel.app/url/docs.gitbook.com
E2E	https://7f2de260.gitbook-open.pages.dev/gitbook.gitbook.io/test-gitbook-open	https://gitbook-v2-6xbnnzi5o-gitbook.vercel.app/url/gitbook.gitbook.io/test-gitbook-open

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Build	Status	Details	Updated (UTC)
customers-v1 (Inspect)	👍 Changes approved	6 changed	Mar 11, 2025, 11:27 AM
customers-v2 (Inspect)	⚠️ Changes detected (Review)	8 changed	Mar 11, 2025, 11:28 AM
default (Inspect)	👍 Changes approved	4 changed	Mar 11, 2025, 11:28 AM
v2-vercel (Inspect)	⚠️ Changes detected (Review)	1 changed	Mar 11, 2025, 11:30 AM