Fix flash for site with dark default mode

[SamyPesse]

No description provided.

[changeset-bot]

🦋 Changeset detected

Latest commit: 82559a0

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
gitbook	Patch

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[github-actions]

Summary of the deployments:

Version 1 (production)

Version	URL	Status
Latest commit	https://58744e3f.gitbook-open.pages.dev	✅
PR	https://pr3050.gitbook-open.pages.dev	✅

Version 2 (experimental)

Version	URL	Status
Vercel	https://gitbook-v2-80oqpi0pv-gitbook.vercel.app	✅
Cloudflare	https://7d4cba83-gitbook-open-v2-preview.gitbook.workers.dev	✅

Test content

Site	v1	v2
GitBook	https://58744e3f.gitbook-open.pages.dev/docs.gitbook.com	https://gitbook-v2-80oqpi0pv-gitbook.vercel.app/url/docs.gitbook.com
E2E	https://58744e3f.gitbook-open.pages.dev/gitbook.gitbook.io/test-gitbook-open	https://gitbook-v2-80oqpi0pv-gitbook.vercel.app/url/gitbook.gitbook.io/test-gitbook-open

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Build	Status	Details	Updated (UTC)
customers-v1 (Inspect)	👍 Changes approved	1 changed	Mar 26, 2025, 4:59 PM
customers-v2 (Inspect)	✅ No changes detected	-	Mar 26, 2025, 5:01 PM
default (Inspect)	✅ No changes detected	-	Mar 26, 2025, 4:59 PM
v2-vercel (Inspect)	✅ No changes detected	-	Mar 26, 2025, 5:02 PM