Use the proxy request identifier for storing the VA cookie in proxy sites

[taranvohra]

Since proxy requests are of the form https://proxy.gitbook.site/sites/<siteId>/path we ensure the siteBasePath here is consistent during storing and retrieving the cookie

[github-actions]

Summary of the deployments:

Version 1 (production)

Version	URL	Status
Latest commit	https://f890372b.gitbook-open.pages.dev	✅
PR	https://pr3091.gitbook-open.pages.dev	✅

Version 2 (experimental)

Version	URL	Status
Vercel	https://gitbook-v2-9tm1zt95m-gitbook.vercel.app	✅
Cloudflare		✅

Test content

Site	v1	v2
GitBook	https://f890372b.gitbook-open.pages.dev/docs.gitbook.com	https://gitbook-v2-9tm1zt95m-gitbook.vercel.app/url/docs.gitbook.com
E2E	https://f890372b.gitbook-open.pages.dev/gitbook.gitbook.io/test-gitbook-open	https://gitbook-v2-9tm1zt95m-gitbook.vercel.app/url/gitbook.gitbook.io/test-gitbook-open

[argos-ci]

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Build	Status	Details	Updated (UTC)
customers-v1 (Inspect)	✅ No changes detected	-	Apr 9, 2025, 6:49 AM
customers-v2 (Inspect)	✅ No changes detected	-	Apr 9, 2025, 6:50 AM
default (Inspect)	✅ No changes detected	-	Apr 9, 2025, 6:51 AM
v2-vercel (Inspect)	👍 Changes approved	8 added	Apr 9, 2025, 6:53 AM

[changeset-bot]

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Latest commit: 599ce1c

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