一个联系人设置多个邮箱时，未填写的邮箱也保存为空了 bug修复

src/views/ecw/customer/edit.vue

@@ -863,7 +863,7 @@ export default {
           const form = {...this.form, type: this.form.type?.join(','), transportType: (this.form.transportType || [])?.join(','), taxRate: Number(this.form.taxRate)}
             form.customerContacts = JSON.parse(JSON.stringify(this.form.customerContacts))
             form.customerContacts.forEach(e =>{
-              e.email = [...e.email].join(',')
+              e.email = [...e.email].filter(i => i !== '').join(',')
             })
           // 检查路线是否启用了但是没选择目的仓
           let errors = 0