fix(async-mapper): fix asyncMapper for entities

Fix problem where having an asyncMapper for entities on two pages with
the same entity would cause the mapped component for the first page to
be used on the second page as well, without checking the bundle.

Author: Ian Wensink

src/EntityMapper.js

@@ -87,6 +87,7 @@ class EntityMapper extends Component {
     const state = getNested(() => this.context.hnContext.state.entities[uuid]);
     if (state) {
       this.setState(state);
+      delete this.context.hnContext.state.entities[uuid];
     } else {
       this.loadComponent(this.props);
     }