fix(shared): restore ESM declarations

[jacekradko]

Summary

• restore .d.mts declarations for @clerk/shared ESM export conditions
• add a declaration-copy step that rewrites relative declaration imports for Node-style ESM resolution
• add a changeset for @clerk/shared

Verification

• git diff --check
• env NPM_CONFIG_CACHE=/private/tmp/codex-npm-cache-pr8207 pnpm --filter @clerk/shared lint:attw
• node -e "console.log(typeof require('@clerk/shared/react').ClerkInstanceContext)"
• node -e "import('@clerk/shared/react').then(m => console.log(typeof m.ClerkInstanceContext))"

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Project	Deployment	Actions	Updated (UTC)
clerk-js-sandbox	Error		May 12, 2026 0:18am

[changeset-bot]

🦋 Changeset detected

Latest commit: f96056c

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

This PR includes changesets to release 21 packages

Name	Type
@clerk/shared	Patch
@clerk/agent-toolkit	Patch
@clerk/astro	Patch
@clerk/backend	Patch
@clerk/chrome-extension	Patch
@clerk/clerk-js	Patch
@clerk/expo-passkeys	Patch
@clerk/expo	Patch
@clerk/express	Patch
@clerk/fastify	Patch
@clerk/hono	Patch
@clerk/localizations	Patch
@clerk/msw	Patch
@clerk/nextjs	Patch
@clerk/nuxt	Patch
@clerk/react-router	Patch
@clerk/react	Patch
@clerk/tanstack-react-start	Patch
@clerk/testing	Patch
@clerk/ui	Patch
@clerk/vue	Patch

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