fix(types): improve with strict mode (#1041)

src/runtime/ui.config/elements/accordion.ts

@@ -15,6 +15,6 @@ export default {
     openIcon: 'i-heroicons-chevron-down-20-solid',
     closeIcon: '',
     class: 'mb-1.5 w-full',
-    variant: 'soft'
+    variant: 'soft' as const
   }
-}
+}