fix(GtfsPlusEditor): Skip rendering if feed version summary is not fetched.

Author: binh-dam-ibigroup

lib/gtfsplus/components/GtfsPlusEditor.js

@@ -134,7 +134,7 @@ export default class GtfsPlusEditor extends Component<Props> {
       validation,
       visibleRows
     } = this.props
-    if (!feedSource) return null
+    if (!feedSource || !feedVersionSummary) return null
     const editingIsDisabled = !user.permissions ||
       !user.permissions.hasFeedPermission(
         feedSource.organizationId,