Extract page title utility and add SEO title support (#4647)

Co-authored-by: Claude Haiku 4.5 <noreply@anthropic.com>
Co-authored-by: Nolann Biron <biron.nolann@gmail.com>
Co-authored-by: Nolann B. <100787331+nolannbiron@users.noreply.github.com>

package.json

@@ -48,7 +48,7 @@
             "@tsconfig/strictest": "^2.0.6",
             "@tsconfig/node20": "^20.1.6",
             "@base-ui/react": "^1.7.0",
-            "@gitbook/api": "0.203.0",
+            "@gitbook/api": "0.204.0",
             "@scalar/api-client-react": "^1.3.46",
             "@types/react": "^19.0.0",
             "@types/react-dom": "^19.0.0",