Refactor expandChildNodes function and update setExpandedNodes logic

src/TreeViewList/TreeViewList.tsx

@@ -112,19 +112,14 @@ const TreeViewList = ({
         }
       }
     };
-    expandChildNodes(treeDisplayItems);
-    // update the expanded nodes with the searched nodes
 
-    // Convert the Set to an Array for comparison
-    const newExpandedNodes = [...searchedNodes];
+    // recursively expand the child nodes
+    expandChildNodes(treeDisplayItems);
 
-    // Only update the state if there are changes
+    // update the expanded nodes with the searched nodes
     setExpandedNodes(prevState => {
-      const isSame =
-        prevState.length === newExpandedNodes.length &&
-        prevState.every((node, index) => node === newExpandedNodes[index]);
-
-      return isSame ? prevState : newExpandedNodes;
+      const merged = new Set([...prevState, ...searchedNodes]);
+      return Array.from(merged);
     });
   };