don't bump react

Author: minrk

package.json

@@ -68,13 +68,13 @@
     "@lumino/polling": "^2.1.3",
     "@lumino/signaling": "^2.1.3",
     "@lumino/widgets": "^2.6.0",
-    "react": "^19.0.0",
-    "react-dom": "^19.0.0"
+    "react": "^18.2.0",
+    "react-dom": "^18.2.0"
   },
   "devDependencies": {
     "@jupyterlab/builder": "^4.3.5",
-    "@types/react": "^19.0.10",
-    "@types/react-dom": "~19.0.4",
+    "@types/react": "^18.0.26",
+    "@types/react-dom": "~18.3.1",
     "@typescript-eslint/eslint-plugin": "^8.25.0",
     "@typescript-eslint/parser": "^8.25.0",
     "eslint": "^9.21.0",