message: build(ExportMap): Add "default" entry
  > "default" - the generic fallback that always matches. Can be a CommonJS or ES module file. This condition should always come last.
diff: "browser": "./dist/browser/index.js",
  "import": "./dist/node/index.js",
  "umd": "./dist/umd/itk-wasm.js",
  - "package.json": "./package.json"
  + "package.json": "./package.json",
  + "default": "./dist/index.js"
  }
  },
  "type": "module",
  