message: chore(core): use correct dev task
diff: "directory": "packages/core"
  },
  "scripts": {
  - "devx": "concurrently \"rollup --config node:@reactflow/rollup-config --watch\" pnpm:css-watch",
  - "dev": "rollup --config node:@reactflow/rollup-config --watch",
  + "dev": "concurrently \"rollup --config node:@reactflow/rollup-config --watch\" pnpm:css-watch",
  "build": "rollup --config node:@reactflow/rollup-config --environment NODE_ENV:production && npm run css",
  "css": "postcss src/styles/{base,style}.css --config ./../../tooling/postcss-config/postcss.config.js --dir dist",
  "css-watch": "pnpm css --watch",
  