Adding an Output to a Collapsed Node Graph by Dragging a Pin to it Won't Update Properly

Adding a output pin to a collapsed graph through dragging it on adds it to the list of inputs and doesn't update the input/output nodes.

Found in 4.19 CL# 4033788, 4.20 CL# 4302132, and 4.21 CL# 4370874

1. Open the editor
2. Collapse a collection of nodes in a blueprint graph
3. From outside the collapsed nodes logic, drag a new pin to the output from any input pin
4. Open the collapsed node

Results:
In the collapsed node details a Input will be added instead of an ouput, while being on the outputside of the node. Additionally the inside of the collapsed node will not be updated.

Expected:
An output pin would be added correctly to the collapsed node and updated properly.