fixed reference classes don't show up in filter search

Author: webermayank

src/components/ReferenceDirectoryWithFilter/index.tsx

@@ -72,18 +72,26 @@ export const ReferenceDirectoryWithFilter = ({
 
     return categoryData.reduce((acc: FilteredCategoryData[], category) => {
       const filteredSubcats = category.subcats.reduce(
-        (subAcc, subcat) => {
+        (subAcc :typeof category.subcats, subcat) => {
           const filteredEntries = subcat.entries.filter((entry) =>
             entry.data.title
               .toLowerCase()
               .includes(searchKeyword.toLowerCase()),
           );
+          if (subcat.entry &&
+            subcat.entry.data.title
+            .toLowerCase()
+            .includes(searchKeyword.toLowerCase())
+            ) {
+           filteredEntries.push(subcat.entry);
+          }
+          
           if (filteredEntries.length > 0) {
             subAcc.push({ ...subcat, entries: filteredEntries });
           }
           return subAcc;
         },
-        [] as typeof category.subcats,
+        [],
       );
 
       if (filteredSubcats.length > 0) {