Compile Error with 5.x branch

[ryanzhoooou]

Hi, I'm using unreal engine 5.3, and there is some compile issue in FlowGrpahNode.cpp.

`
for (int i = AllFlowNodePins.Num() - 1; i >= 0; --i)
{
if (!AllFlowNodePins[i].IsValid())
{
AllFlowNodePins.RemoveAtSwap(i, EAllowShrinking::No);
}
}

// Get the current FlowGraphNode pins list - orphaned pins need to be stripped from the current pins.
TArray<UEdGraphPin*> AllGraphNodePins = Pins;
for (int i = AllGraphNodePins.Num() - 1; i >= 0; --i)
{
	if (AllGraphNodePins[i]->bOrphanedPin)
	{
		AllGraphNodePins.RemoveAtSwap(i, EAllowShrinking::No);
	}
}`

Seems like EAllowShrinking is a UE5.5 feature enum.