When a user is invited to a group that has other pending invites and accepts the invitation, then all pending invites are displayed as "left the group".
When accepting a group invitation, the current state of the group should not be displayed as "joined" or "left".
When a user is invited to a group that has other pending invites and accepts the invitation, then all pending invites are displayed as "left the group".
When accepting a group invitation, the current state of the group should not be displayed as "joined" or "left".