Update index.ts (#2336)

fix(deepMerge): 原对象受浅拷贝影响的问题

src/utils/index.ts

@@ -3,6 +3,7 @@ import type { App, Plugin } from 'vue';
 
 import { unref } from 'vue';
 import { isObject } from '/@/utils/is';
+import { cloneDeep } from 'lodash-es';
 
 export const noop = () => {};
 
@@ -35,10 +36,11 @@ export function setObjToUrlParams(baseUrl: string, obj: any): string {
 // 深度合并
 export function deepMerge<T = any>(src: any = {}, target: any = {}): T {
   let key: string;
+  const res: any = cloneDeep(src)
   for (key in target) {
-    src[key] = isObject(src[key]) ? deepMerge(src[key], target[key]) : (src[key] = target[key]);
+    res[key] = isObject(res[key]) ? deepMerge(res[key], target[key]) : (res[key] = target[key]);
   }
-  return src;
+  return res;
 }
 
 export function openWindow(