Changes to Spawn an orchestrator session

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 500

removed the agent_switch_saga enum value from the reporting_owner response property for the response status 501

added the new optional request property approvalMode

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 500 status

added the optional property reporting_owner to the response with the 501 status

added the new optional request property mode