not render tags if they are empty

src/components/courses/hy-content-list-item/hy-content-list-item.tsx

@@ -93,7 +93,7 @@ export class HyContentLstItem {
                 </div>,
               ]}
         </div>
-        {this._courseTags && (
+        {this._courseTags.length > 0 && (
           <div class="hy-content-list-item--tags">
             {this._courseTags.map((x) => {
               return <hy-tag>{x.name}</hy-tag>;