handleClientsHaveChangedFailure
open suspend override fun handleClientsHaveChangedFailure(sendFailure: ProteusSendMessageFailure, conversationId: <Error class: unknown class>?): Either<CoreFailure, Unit>
Handle a failure when attempting to send a message due to contacts and/or clients being removed from conversation and/or added to them.
Return
Either.Left if can't recover from error
Either.Right if the error was properly handled and a new attempt at sending message can be made