Accept Merge Request #895: (feature/制造代码优化 -> develop)

Merge Request: 修复能力特征库报错：no placeholder

Created By: @马广威
Accepted By: @马广威
URL: https://jikimo-hn.coding.net/p/jikimo_sfs/d/jikimo_sf/git/merge/895?initial=true

jikimo_frontend/static/src/js/custom_image_temp.js

@@ -4,6 +4,8 @@ import { registry } from "@web/core/registry";
 import { url } from "@web/core/utils/urls";
 import { ImageField, imageCacheKey } from '@web/views/fields/image/image_field';
 
+const placeholder = "/web/static/img/placeholder.png";
+
 export class CustomImageField extends ImageField {
     setup() {
         super.setup();