Changes to Send a message to a running session's agent

removed the agent_switch_saga enum value from the reporting_owner response property for the response status 400

removed the agent_switch_saga enum value from the reporting_owner response property for the response status 404

removed the agent_switch_saga enum value from the reporting_owner response property for the response status 409

removed the agent_switch_saga enum value from the reporting_owner response property for the response status 500

added the new optional request property senderSessionId

added the new optional request property userAuthored

added the optional property reporting_owner to the response with the 400 status

added the optional property reporting_owner to the response with the 404 status

added the optional property reporting_owner to the response with the 409 status

added the optional property reporting_owner to the response with the 500 status

added the new optional request property attachment

added the non-success response with the status 409

removed the non-success response with the status 409