企业微信工具有BUG，自动多了一个$造成UUID不合法

[oiuv]

Self Checks

• [X] This is only for bug report, if you would like to ask a question, please head to Discussions.
• [X] I have searched for existing issues search for existing issues, including closed ones.
• [X] I confirm that I am using English to submit this report (我已阅读并同意 Language Policy).
• [X] Please do not modify this template :) and fill in all the required fields.

Dify version

0.6.11

Cloud or Self Hosted

Self Hosted (Docker)

Steps to reproduce

无法用企业微信webhook，示例如上图。

✔️ Expected Behavior

正常情况应该是通过webhook发消息到企业微信

❌ Actual Behavior

报以下问题：

{"wecom_group_bot": "Invalid parameter hook_key $24****d4, not a valid UUID"}

实际UUID是24********************************d4，这里显示多了一个$造成UUID错误。

[crazywoola]

Close due to #1542