fix: make v2 with modules run (#6636)

packages/utils/src/common/deep-copy.ts

@@ -3,17 +3,12 @@ import { isObject } from "./is-object"
 /**
  * In most casees, JSON.parse(JSON.stringify(obj)) is enough to deep copy an object.
  * But in some cases, it's not enough. For example, if the object contains a function or a proxy, it will be lost after JSON.parse(JSON.stringify(obj)).
- * Furthermore, structuredClone is not present in all environments, such as with jest so we need to use a custom deepCopy function.
  *
  * @param obj
  */
 export function deepCopy<T extends Record<any, any> = Record<any, any>>(
   obj: T | T[]
 ): T | T[] {
-  if (typeof structuredClone != "undefined") {
-    return structuredClone(obj)
-  }
-
   if (obj === null || typeof obj !== "object") {
     return obj
   }