Fix TypeScript typecheck errors

resources/js/admin/mobile/components/UserMenuSheet.tsx

@@ -17,7 +17,7 @@ import { MobileSelect } from './FormControls';
 type UserMenuSheetProps = {
   open: boolean;
   onClose: () => void;
-  user?: { name?: string | null; email?: string | null; avatar_url?: string | null };
+  user?: { name?: string | null; email?: string | null; avatar_url?: string | null } | null;
   isMember: boolean;
   navigate: (path: string) => void;
 };
@@ -245,7 +245,7 @@ export function UserMenuSheet({ open, onClose, user, isMember, navigate }: UserM
                   <Switch
                     size="$2"
                     checked={isDark}
-                    onCheckedChange={(next) => updateAppearance(next ? 'dark' : 'light')}
+                    onCheckedChange={(next: boolean) => updateAppearance(next ? 'dark' : 'light')}
                     aria-label={t('mobileProfile.theme', 'Dark Mode')}
                   >
                     <Switch.Thumb />