[Problem/Question]
In the Flutter Chat SDK, in a GroupChannel, if an agent A assigned the ticket to an agent B, even if A never sent a message, A is listed in the channel members
[SDK Version]
4.0.13
[Reproduction Steps]
As a user U, create a GroupChannel. As agent A, assign the ticket to agent B. The GroupChannel has 3 members: U, A and B. A should not be a member since he just assigned the ticket and never sent a message, right ?
