Show forward names

**Is your feature request related to a problem? Please describe.**
When looking at a flow to try to understand the adapter the forward names can give vital information

**Describe the solution you'd like**
Show the forward names on the arrows

**Describe alternatives you've considered**
From what I remember it might be difficult/impossible to show them so an alternative might be to give the arrows different colors. When the first forward is green and the following forwards are yellow/orange/... (not sure what the right color would be) you can at least tell the difference between success and failure forwards and understand "switch pipes" better. I think I wouldn't use red as the second forward isn't always an error, hence a more neutral color like orange or yellow would be better.

**Additional context**
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Start by locating the flow editor's arrow-rendering entry point and the data that represents forwards. Check whether forward names are available when edges are drawn, then assess displaying those names on arrows or using distinct colors to distinguish successive forwards. Done means the flow view clearly communicates forward identity or order without relying on undocumented behavior.

Written by the indexing model from the issue text.