Update sort order logic to consider search state

src/App.tsx

@@ -394,22 +394,24 @@ export default function App() {
 
   const getNextTextSortOrder = useCallback(
     (folderId: string | null) => {
+      if (hasSearch) return null;
       const list = textsByFolder.get(folderId ?? null) ?? [];
       const hasManualOrder = list.some((text) => text.sort_order !== null);
       if (!hasManualOrder) return null;
       return list.length;
     },
-    [textsByFolder]
+    [hasSearch, textsByFolder]
   );
 
   const getNextFolderSortOrder = useCallback(
     (parentId: string | null) => {
+      if (hasSearch) return null;
       const list = foldersByParent.get(parentId ?? null) ?? [];
       const hasManualOrder = list.some((folder) => folder.sort_order !== null);
       if (!hasManualOrder) return null;
       return list.length;
     },
-    [foldersByParent]
+    [foldersByParent, hasSearch]
   );
 
   const isFolderExpanded = useCallback(