Fixed missing move semantics in script object reference

Source/Engine/Scripting/ScriptingObjectReference.h

@@ -33,6 +33,13 @@ public:
     {
     }
 
+    ScriptingObjectReferenceBase(ScriptingObjectReferenceBase&& other) noexcept
+        : _object(nullptr)
+    {
+        OnSet(other._object);
+        other.OnSet(nullptr);
+    }
+
     /// <summary>
     /// Initializes a new instance of the <see cref="ScriptingObjectReferenceBase"/> class.
     /// </summary>
@@ -96,6 +103,16 @@ protected:
     void OnSet(ScriptingObject* object);
 
     void OnDeleted(ScriptingObject* obj);
+
+    ScriptingObjectReferenceBase& operator=(ScriptingObjectReferenceBase&& other) noexcept
+    {
+        if (this != &other)
+        {
+            OnSet(other._object);
+            other.OnSet(nullptr);
+        }
+        return *this;
+    }
 };
 
 /// <summary>
@@ -133,6 +150,11 @@ public:
     {
     }
 
+    ScriptingObjectReference(ScriptingObjectReference&& other) noexcept
+        : ScriptingObjectReferenceBase(MoveTemp(other))
+    {
+    }
+
     /// <summary>
     /// Finalizes an instance of the <see cref="ScriptingObjectReference"/> class.
     /// </summary>
@@ -173,6 +195,12 @@ public:
         return *this;
     }
 
+    ScriptingObjectReference& operator=(ScriptingObjectReference&& other) noexcept
+    {
+        ScriptingObjectReferenceBase::operator=(MoveTemp(other));
+        return *this;
+    }
+
     FORCE_INLINE ScriptingObjectReference& operator=(const Guid& id)
     {
         OnSet(static_cast<ScriptingObject*>(FindObject(id, T::GetStaticClass())));