NewMessageEventHandlerImpl
constructor(proteusMessageUnpacker: ProteusMessageUnpacker, mlsMessageUnpacker: MLSMessageUnpacker, applicationMessageHandler: ApplicationMessageHandler, legalHoldHandler: LegalHoldHandler, enqueueSelfDeletion: (ConversationId, messageId: String) -> Unit, enqueueConfirmationDelivery: suspend (ConversationId, messageId: String) -> Unit, selfUserId: UserId, staleEpochVerifier: StaleEpochVerifier, resetMLSConversation: ResetMLSConversationUseCase)