feat(backend,shared,clerk-js): Support suffixed cookies [CORE-2086]

[dimkl]

Description

Generate suffixed and un-suffixed __client_uat (in dev instance), __session, __clerk_db_jwt (In dev instance) cookies from ClerkJS and support reading the either the suffixed or the un-suffixed cookies in the backend SDK using the
__client_uat & __session cookies.
New ClerkJS versions will generate both suffixed and un-suffixed cookies but the backend SDK will consume only 1 of those 2.

Checklist

• npm test runs as expected.
• npm run build runs as expected.
• (If applicable) JSDoc comments have been added or updated for any package exports
• (If applicable) Documentation has been updated

Type of change

• 🐛 Bug fix
• 🌟 New feature
• 🔨 Breaking change
• 📖 Refactoring / dependency upgrade / documentation
• other:

[changeset-bot]

🦋 Changeset detected

Latest commit: 4b3e2e1

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

This PR includes changesets to release 15 packages

Name	Type
@clerk/clerk-js	Minor
@clerk/backend	Minor
@clerk/shared	Minor
@clerk/astro	Patch
@clerk/chrome-extension	Patch
@clerk/clerk-expo	Patch
@clerk/express	Patch
@clerk/fastify	Patch
@clerk/nextjs	Patch
@clerk/remix	Patch
@clerk/clerk-sdk-node	Patch
@clerk/tanstack-start	Patch
@clerk/testing	Patch
@clerk/elements	Patch
@clerk/clerk-react	Patch

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[dimkl]

ℹ️ We expect that in this case a handshake flow should be triggered since un-suffixed __client_uat would have a a value > 0

[nikosdouvlis]

Closing this one manually as GH is partially down - the commit is already into main