[AI] Add Yarn constraints to enforce consistent dependency versions (#7229)

* [AI] Add yarn constraints to enforce consistent dependency versions

Adds a `yarn.config.cjs` that uses Yarn 4's built-in constraints feature
to detect when the same dependency is declared with different version
ranges across workspaces. Workspace protocol references and
peerDependencies are excluded from the check.

Also adds a `yarn constraints` convenience script and the `@yarnpkg/types`
dev dependency for type-checked constraint authoring.

https://claude.ai/code/session_01B1xRjZXn6b18anZjo8cbqb

* Add release notes for PR #7229

* Add constraints job to GitHub Actions workflow

* Fix constraints

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Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

packages/docs/package.json

@@ -25,8 +25,8 @@
     "@r74tech/docusaurus-plugin-panzoom": "^2.4.0",
     "clsx": "^2.1.1",
     "prism-react-renderer": "^2.4.1",
-    "react": "^19.2.4",
-    "react-dom": "^19.2.4"
+    "react": "19.2.4",
+    "react-dom": "19.2.4"
   },
   "devDependencies": {
     "@docusaurus/module-type-aliases": "^3.9.2",