bug: expected PropType in Model ImmutablePureComponent should be a map instead of OrderedMap (#5921)

src/core/components/model.jsx

@@ -5,7 +5,7 @@ import PropTypes from "prop-types"
 
 export default class Model extends ImmutablePureComponent {
   static propTypes = {
-    schema: ImPropTypes.orderedMap.isRequired,
+    schema: ImPropTypes.map.isRequired,
     getComponent: PropTypes.func.isRequired,
     getConfigs: PropTypes.func.isRequired,
     specSelectors: PropTypes.object.isRequired,