fix: update test expectations for replica downscale order change

Signed-off-by: kitae <[email protected]>

Author: ktyxx

python/ray/serve/_private/deployment_scheduler.py

@@ -747,13 +747,13 @@ def key(node_and_num_running_replicas_of_all_deployments):
             )
 
         for node_id, _ in sorted(
-            node_to_running_replicas_of_all_deployments.items(), key=key, reverse=True
+            node_to_running_replicas_of_all_deployments.items(), key=key
         ):
             if node_id not in node_to_running_replicas_of_target_deployment:
                 continue
-            for running_replica in node_to_running_replicas_of_target_deployment[
-                node_id
-            ]:
+            for running_replica in reversed(
+                list(node_to_running_replicas_of_target_deployment[node_id])
+            ):
                 if len(replicas_to_stop) == max_num_to_stop:
                     return replicas_to_stop
                 else: