[FEATURE]: Remove 'Your response was sent to app' message

[garrytrinder]

[garrytrinder]

https://learn.microsoft.com/en-us/microsoftteams/platform/bots/how-to/conversations/conversation-messages?tabs=typescript#form-completion-feedback

{
   "content":{
      "type":"AdaptiveCard",
      "title":"Card with hidden footer messages",
      "version":"1.0",
      "actions":[
         {
            "type":"Action.Submit",
            "title":"Submit",
            "msTeams":{
               "feedback":{
                  "hide":true
               }
            }
         }
      ]
   }
}