No error message when connecting a non-convertible pin type on a MakeSet node

No error message when connecting a non-convertible pin type on a MakeSet node. The connection fails silently.

I have not checked this issue on Linux or Mac.

This was also seen in //UE4/Release-4.22 4.22.3 @ CL 7053642 so I have not marked this a regression.

1. Open QAGame.uproject in UE4Editor
2. Open TM-MakeContainers.umap
3. In the Toolbar, click on Blueprints > Open Level Blueprint
4. Focus on the comment box readong MakeSet - Cannot Convert to pin
5. Drag off the Return Value on the Make Literal Float connect it to the [2] pin on the MakeSet node

Result: The connection cannot be made but no error message is displayed
Expected Result: The connection cannot be made and error message and the error message
"Float is not compatible with Name" is displayed