Update Multiply node defaults

com.unity.shadergraph/Editor/Data/Nodes/Math/Basic/MultiplyNode.cs

         public sealed override void UpdateNodeAfterDeserialization()
         {
             AddSlot(new DynamicValueMaterialSlot(Input1SlotId, kInput1SlotName, kInput1SlotName, SlotType.Input, Matrix4x4.zero));
-            AddSlot(new DynamicValueMaterialSlot(Input2SlotId, kInput2SlotName, kInput2SlotName, SlotType.Input, new Matrix4x4(new Vector4(2,2,2,2), Vector4.zero, Vector4.zero, Vector4.zero)));
+            AddSlot(new DynamicValueMaterialSlot(Input2SlotId, kInput2SlotName, kInput2SlotName, SlotType.Input, new Matrix4x4(new Vector4(2,2,2,2), new Vector4(2,2,2,2), new Vector4(2,2,2,2), new Vector4(2,2,2,2))));
             AddSlot(new DynamicValueMaterialSlot(OutputSlotId, kOutputSlotName, kOutputSlotName, SlotType.Output, Matrix4x4.zero));
             RemoveSlotsNameNotMatching(new[] { Input1SlotId, Input2SlotId, OutputSlotId });
         }