Change GetScriptContainer returns

src/neo/SmartContract/ApplicationEngine.Runtime.cs

@@ -2,6 +2,7 @@
 using Neo.IO;
 using Neo.Network.P2P.Payloads;
 using Neo.SmartContract.Native;
+using Neo.VM.Types;
 using System;
 using System.Collections.Generic;
 using System.IO;
@@ -39,9 +40,10 @@ protected internal ulong GetTime()
             return PersistingBlock.Timestamp;
         }
 
-        protected internal IInteroperable GetScriptContainer()
+        protected internal StackItem GetScriptContainer()
         {
-            return ScriptContainer as IInteroperable;
+            if (ScriptContainer is not IInteroperable interop) throw new InvalidOperationException();
+            return interop.ToStackItem(ReferenceCounter);
         }
 
         protected internal bool CheckWitness(byte[] hashOrPubkey)

tests/neo.UnitTests/SmartContract/UT_InteropService.cs

@@ -203,7 +203,7 @@ private static void AssertNotification(StackItem stackItem, UInt160 scriptHash,
         [TestMethod]
         public void TestExecutionEngine_GetScriptContainer()
         {
-            GetEngine(true).GetScriptContainer().Should().BeOfType<Transaction>();
+            GetEngine(true).GetScriptContainer().Should().BeOfType<VM.Types.Array>();
         }
 
         [TestMethod]

tests/neo.UnitTests/SmartContract/UT_Syscalls.cs

@@ -127,9 +127,8 @@ public void System_ExecutionEngine_GetScriptContainer()
                 var engine = ApplicationEngine.Create(TriggerType.Application, null, snapshot);
                 engine.LoadScript(script.ToArray());
 
-                Assert.AreEqual(engine.Execute(), VMState.HALT);
-                Assert.AreEqual(1, engine.ResultStack.Count);
-                Assert.IsTrue(engine.ResultStack.Peek().IsNull);
+                Assert.AreEqual(engine.Execute(), VMState.FAULT);
+                Assert.AreEqual(0, engine.ResultStack.Count);
 
                 // With tx