Cannot receive any activity type other than 'message' type.

[yagasoft]

Describe the bug
I am trying to send a 'command' from Copilot, but for some reason, I cannot receive it on the front end. I will describe below what I have tried.

To Reproduce

1. Set up an Omnichannel chat channel (workstream).
2. Add a Copilot bot built using Copilot Studio to the workstream.
3. In the 'Conversation Start' topic, add any of the following:
   a. Custom 'Channel' data to a 'message' node.
   b. Custom 'Value' data to a 'message' node.
   c. 'Command' activity.
   d. 'Event' activity.
   e. 'Invoke' activity.
4. Listen on the front end using one of the following methods:
   a. Add a handler using onNewMessage.
   b. Add a middleware and intercept 'DIRECT_LINE/INCOMING_ACTIVITY'.
   c. Add a middleware and intercept 'DIRECT_LINE/CONNECT_FULFILLED' and add a handler to 'directLine.activity$'.

Expected behavior
I expected to receive any of the items described in point 3 above.

Desktop (please complete the following information):

• OS: Windows 11
• Browser: Chrome
• Version: 131.0.6778.86

Additional context
I received none of the items in point 3 in the reproduction steps. The only thing I seem to be able to catch is activities of type 'message' only, with the default channel data (none of the custom values) and no 'value'.

I tried to scan the source code for any filtering, and I found in 'newMessageEventHandler' file a filter to only handle 'message' activities. Even when I removed this condition, the behaviour was exactly the same!