Update unit test to preserve the partition order while sending remote fetch requests

Author: kamalcph

core/src/test/scala/unit/kafka/server/ReplicaManagerTest.scala

@@ -3657,8 +3657,8 @@ class ReplicaManagerTest {
       val capturedFetchInfos = remoteStorageFetchInfoArg.getAllValues.asScala
       assertEquals(2, capturedFetchInfos.size, "Should have 2 remote storage fetch info calls")
 
-      val capturedTopicPartitions = capturedFetchInfos.map(_.topicIdPartition.topicPartition).toSet
-      assertTrue(capturedTopicPartitions.contains(tp0), "Should contain " + tp0)
+      val capturedTopicPartitions = capturedFetchInfos.map(_.topicIdPartition.topicPartition)
+      assertEquals(tp0, capturedTopicPartitions.head, "Should contain " + tp0 + " as first item")
       assertTrue(capturedTopicPartitions.contains(tp1), "Should contain " + tp1)
 
       // Verify the fetch info details are correct for both partitions
@@ -3765,8 +3765,8 @@ class ReplicaManagerTest {
       val capturedFetchInfos = remoteStorageFetchInfoArg.getAllValues.asScala
       assertEquals(2, capturedFetchInfos.size, "Should have 2 remote storage fetch info calls")
 
-      val capturedTopicPartitions = capturedFetchInfos.map(_.topicIdPartition.topicPartition).toSet
-      assertTrue(capturedTopicPartitions.contains(tp0), "Should contain " + tp0)
+      val capturedTopicPartitions = capturedFetchInfos.map(_.topicIdPartition.topicPartition)
+      assertEquals(tp0, capturedTopicPartitions.head, "Should contain " + tp0 + " as first item")
       assertTrue(capturedTopicPartitions.contains(tp1), "Should contain " + tp1)
 
       // Verify the fetch info details are correct for both partitions