Message Attachment msg_in_chat_window boolean acting wierd

Description:

While developing an app through rocket chat app engine framework when we try to add a button attachment with msg_in_chat_window boolean , When the boolean is true the message sent by the user through the app should be shown in chat window and when boolean is false the message should not be shown in the chat but should be sent .

Steps to reproduce:

1. Add an attachment of type button with some text and msg attribute to the message using rocket chat app
2. Clicking on the button should result in the button clicking user to send the msg attribute value message to chat
3. The message should be sent
   
   The attachment object

Expected behavior:

Actual behavior:

The Button gets hidden instead of the msg to be sent and also when the boolean is true the message is hidden which is to be sent

Server Setup Information:

• Version of Rocket.Chat Server:
• Operating System:
• Deployment Method:
• Number of Running Instances:
• DB Replicaset Oplog:
• NodeJS Version:
• MongoDB Version:

Client Setup Information

• Desktop App or Browser Version:
• Operating System:

Additional context

Relevant logs:

Start by reproducing the button attachment behavior in the Rocket.Chat App Engine with msg_in_chat_window set to true and false. Compare whether the message is sent and whether it appears in the chat window; done means both visibility cases match the described expected behavior.