Steps to reproduce:
- Create a new group chat
- Add 3 people: A,B and C
- Send a message to the group and verify that all 3 other participants can receive the message from the admin
- Send a message from A, B and C. Check that both other participants and the admin can see it.
- As admin, remove C from group chat
- As admin try to send a message to that group and verfy that A and B didn't get it.
- As A, try to send a message to the group and verify that B got it, but admin didn't