When an user uses command teams channel member [verb] we should provide an additional check. There is a good chance that they will use a public channel instead of a private channel and then they will get the following error: Operation not supported for this Channel

With this, it would be useful to provide an isPrivateTeamChannel check before the logic of the command for the following commands.

• teams channel member add
• teams channel member list (not necessary because this is allowed on all types of channels)
• teams channel member remove
• teams channel member set

More info: #3240