message: Add explicit isomorphic-form-data import
diff: "@types/react": "^16.9",
  "graphiql": "^1.0.0-alpha.10",
  "graphql": "^15.3.0",
  + "isomorphic-form-data": "^2.0.0",
  "react": "^16.13.1",
  "react-dom": "^16.13.1",
  "react-router": "6.0.0-beta.0",
  