Undetected infinite loop on spline creation

It is possible to create spline logic that will not be detected by infinite loop detection.

Also hangs if executed in Event Graph on Begin Play.

If saved but not compiled and placed in Editor Startup Map, Editor will hang on startup.

Confirmed in MAIN 4.23 @ CL 5422545

1. Create an Actor BP and paste/create attached BP logic in Construction Script
2. Resolve Compile errors (Create Spline Variable, enter valid Position)
3. Compile

Result: Editor hangs indefinitely