Align URP render graph frame data scope

managed/XCEngine.ScriptCore/Rendering/Core/ContextContainer.cs

@@ -56,6 +56,20 @@ namespace XCEngine.Rendering
             return Create<T>();
         }
 
+        internal void Set<T>(
+            T item)
+            where T : ContextItem
+        {
+            ThrowIfDisposed();
+            if (item == null)
+            {
+                m_items.Remove(typeof(T));
+                return;
+            }
+
+            m_items[typeof(T)] = item;
+        }
+
         public void Dispose()
         {
             if (m_disposed)