This diff introduces changes to the Tunnelbroker gRPC messages stream implementation according to the [[ https://linear.app/comm/issue/ENG-2641/disabling-messages-persistence-in-the-database-in-tunnelbroker | ENG-2641 ]] task, where we need to disable messages persistence in the DynamoDB database using the config file parameter from D6622.
In this diff, we are disabling saving messages into the database when calling send messages, and a config flag from D6622 is presented.
Linear task: [[ https://linear.app/comm/issue/ENG-2641/disabling-messages-persistence-in-the-database-in-tunnelbroker | ENG-2641 ]]