Nicolium: fix keyboard navigation in multi-tab dropdown menus

Signed-off-by: nicole mikołajczyk <git@mkljczk.pl>

packages/pl-fe/src/components/dropdown-menu/dropdown-menu.tsx

@@ -82,7 +82,7 @@ const DropdownMenuContent: React.FC<IDropdownMenuContent> = ({
         case 'ArrowLeft':
           setTab((tab) => {
             if (tab !== undefined) {
-              (elements[tab] as HTMLElement)?.focus();
+              (ref.current?.querySelector(`[data-index="${tab}"]`) as HTMLElement)?.focus();
               return undefined;
             }
             return tab;