remove optional chaining for csb

Author: dhayab

instantsearch.js/render-state/.gitignore

@@ -16,6 +16,7 @@
 .env.development.local
 .env.test.local
 .env.production.local
+.parcel-cache
 
 npm-debug.log*
 yarn-debug.log*

instantsearch.js/render-state/src/app.js

@@ -32,8 +32,11 @@ const emptyHits = connectHits(({ hits, widgetParams }) => {
     return;
   }
 
-  const brandUiState = search.getUiState()[indexName].refinementList?.brand;
-  const isPearRefined = brandUiState?.includes('Pear');
+  const refinementListsUiState = search.getUiState()[indexName].refinementList;
+  const isPearRefined =
+    refinementListsUiState &&
+    refinementListsUiState.brand &&
+    refinementListsUiState.brand.includes('Pear');
 
   if (!isPearRefined) {
     container.innerHTML = 'No results';