2omnichannel bugs

1. Use omnichannel setting to enable email authentication but will not do email authentication. (For this purpose, I deliberately switch the settings and restart the service to find that even the mailbox string is a mandatory item regardless of the switch, so there should be no misunderstanding). This will cause malicious users to send unlimited messages with random mailboxes to block omnichannel dialogue. Or use other people's mailboxes for harassment.

2. omnichannel-directory/contacts/ contacts can not be deleted, there are too many message records, did not find the relevant settings.

translate from

1.使用omnichannel 设置开启邮箱验证 却不会进行邮箱验证。(为此特意开关设置后重启服务发现连邮箱字符串不管开关都是必须项目，应该没有误解)。这样会导致恶意用户无限使用随机邮箱发送消息堵塞omnichannel对话。或者是用别人的邮箱进行骚扰。

2.omnichannel-directory/contacts/的联系人无法删除 消息记录太多了，没有找到相关设置

Start with the omnichannel settings entry point and the omnichannel-directory/contacts area mentioned in the report. Reproduce both the email-authentication toggle behavior and contact deletion failure, then confirm that authentication follows the setting and contacts can be deleted without unintended message-record behavior.