Update react monorepo to v19

package.json

@@ -9,14 +9,14 @@
   "dependencies": {
     "gray-matter": "^4.0.2",
     "next": "latest",
-    "next-mdx-remote": "^5.0.0",
-    "next-remote-watch": "2.0.0",
-    "react": "^17.0.2",
-    "react-dom": "^17.0.2"
+    "next-mdx-remote": "^3.0.1",
+    "next-remote-watch": "1.0.0",
+    "react": "^19.0.0",
+    "react-dom": "^19.0.0"
   },
   "devDependencies": {
-    "@types/node": "24.10.1",
-    "@types/react": "18.0.21",
-    "typescript": "5.9.3"
+    "@types/node": "18.8.5",
+    "@types/react": "19.2.7",
+    "typescript": "4.8.4"
   }
 }