UI: complex topologies are difficult to read

For more complex topologies that feature dense service meshes, it's difficult to say which service is linked to which service from the UI's Topology due to overlapping edges between nodes.

<img width="242" height="450" alt="Image" src="https://github.com/user-attachments/assets/a7ba6c55-c6a5-4e62-b29b-17c9f2998fc4" />