Fixed setError signature

Author: ciscoheat

src/lib/superValidate.ts

@@ -1,4 +1,9 @@
-import { ActionFailure, fail, json, type RequestEvent } from '@sveltejs/kit';
+import {
+  fail,
+  json,
+  type RequestEvent,
+  type ActionFailure
+} from '@sveltejs/kit';
 import { parse, stringify } from 'devalue';
 import {
   SuperFormError,