test(batch25): port gateway connect and tls baseline tests

dotnet/tests/ZB.MOM.NatsNet.Server.Tests/ImplBacklog/JetStreamEngineTests.cs

@@ -3794,4 +3794,31 @@ public sealed class JetStreamEngineTests
         goMethod.ShouldNotBeNullOrWhiteSpace();
     }
 
+    [Fact] // T:1715
+    public void JetStreamStreamConfigClone_ShouldSucceed()
+    {
+        var original = new StreamConfig
+        {
+            Name = "ORDERS",
+            Subjects = ["orders.*"],
+            Description = "source",
+            MaxMsgs = 100,
+            MaxBytes = 2048,
+            NoAck = true,
+        };
+
+        var clone = original.Clone();
+        clone.ShouldNotBeNull();
+        clone.ShouldNotBeSameAs(original);
+        clone.Name.ShouldBe(original.Name);
+        clone.Subjects.ShouldBe(original.Subjects);
+        clone.NoAck.ShouldBeTrue();
+
+        clone.Name = "UPDATED";
+        clone.Subjects = ["orders.updated"];
+
+        original.Name.ShouldBe("ORDERS");
+        original.Subjects.ShouldBe(["orders.*"]);
+    }
+
 }