fix(资质证照管理): 修复重置表单时未正确使用默认值的问题

src/views/documentManagement/certificateManagement/components/add-dialog.vue

@@ -284,7 +284,7 @@
       close() {
         this.dialogVisible = false;
         // this.$refs.form.resetFields()
-        this.form = { defaultForm };
+        this.form = { ...defaultForm };
         this.$refs.productTableRef.initData();
       },