fix(cmdk): Remove String() coercion in story component

Same no-base-to-string fix as the modal and test helper — pass
action.to directly to normalizeUrl which already accepts LocationDescriptor.

Co-Authored-By: Claude <noreply@anthropic.com>

Author: JonasBa

static/app/components/commandPalette/__stories__/components.tsx

@@ -15,7 +15,7 @@ export function CommandPaletteDemo() {
   const handleAction = useCallback(
     (action: CollectionTreeNode<CMDKActionData>) => {
       if ('to' in action) {
-        navigate(normalizeUrl(String(action.to)));
+        navigate(normalizeUrl(action.to));
       } else if ('onAction' in action) {
         action.onAction();
       }