Batch Deployment fix (#34925)

Author: nemanjarajic

sdk/ml/azure-ai-ml/azure/ai/ml/entities/_deployment/batch_deployment.py

@@ -254,7 +254,10 @@ def _from_rest_object(  # pylint: disable=arguments-renamed
     ) -> BatchDeploymentData:
         modelId = deployment.properties.model.asset_id if deployment.properties.model else None
 
-        if hasattr(deployment.properties, "deployment_configuration"):
+        if (
+            hasattr(deployment.properties, "deployment_configuration")
+            and deployment.properties.deployment_configuration is not None
+        ):
             settings = deployment.properties.deployment_configuration.settings
             deployment_comp_settings = {
                 "deployment_configuration_type": deployment.properties.deployment_configuration.deployment_configuration_type,  # pylint: disable=line-too-long