Fix dismissed annoucement banner ignored when switching sites

[valentin0h]

Fixes an issue in v2 where the announcement banner would reappear during client-side navigation between routes despite being previously dismissed. The fix complements the existing page-load script with useEffect that reapplies the banner's dismissed state after next navigation updates the DOM.

before

CleanShot.2025-03-28.at.08.34.26.mp4

after

CleanShot.2025-03-28.at.08.02.31.mp4

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Latest commit: 4aad1fc

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[github-actions]

Summary of the deployments:

Version 1 (production)

Version	URL	Status
Latest commit	https://26a74ddd.gitbook-open.pages.dev	✅
PR	https://pr3057.gitbook-open.pages.dev	✅

Version 2 (experimental)

Version	URL	Status
Vercel	https://gitbook-v2-dz6fztln2-gitbook.vercel.app	✅
Cloudflare	https://cf615fd6-gitbook-open-v2-preview.gitbook.workers.dev	✅

Test content

Site	v1	v2
GitBook	https://26a74ddd.gitbook-open.pages.dev/docs.gitbook.com	https://gitbook-v2-dz6fztln2-gitbook.vercel.app/url/docs.gitbook.com
E2E	https://26a74ddd.gitbook-open.pages.dev/gitbook.gitbook.io/test-gitbook-open	https://gitbook-v2-dz6fztln2-gitbook.vercel.app/url/gitbook.gitbook.io/test-gitbook-open

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Build	Status	Details	Updated (UTC)
customers-v1 (Inspect)	✅ No changes detected	-	Mar 28, 2025, 7:49 AM
customers-v2 (Inspect)	✅ No changes detected	-	Mar 28, 2025, 7:51 AM
default (Inspect)	👍 Changes approved	6 changed	Mar 28, 2025, 7:52 AM
v2-vercel (Inspect)	✅ No changes detected	-	Mar 28, 2025, 7:54 AM

[Copilot]

Pull Request Overview

This PR fixes an issue where a dismissed announcement banner would reappear during client-side navigation by reapplying the dismissed state using a useEffect hook.

• Added a useEffect hook to reapply the dismissed state on route changes
• Updated the AnnouncementDismissedScript.tsx file to include the new behavior

Comments suppressed due to low confidence (1)

packages/gitbook/src/components/Announcement/AnnouncementDismissedScript.tsx:3

• [nitpick] Consider importing useEffect directly (e.g., 'import { useEffect } from "react";') to clarify the dependency usage and potentially reduce bundle size.

import * as React from 'react';