The official fix in electron-react-boilerplate changes the devEngines value to this:

  "devEngines": {
    "runtime": {
      "name": "node",
      "version": ">=14.x",
      "onFail": "error"
    },
    "packageManager": {
      "name": "npm",
      "version": ">=7.x",
      "onFail": "error"
    }
  },