Routing config leads to two `Prefix /` lines in Routing view

#### Overview of the Issue

Consul 1.11.1


```hcl
Kind = "service-router"
Name = "backend"
Routes = [
{
Destination = {
RequestTimeout = "1s"
}
}
]
```

In this case since the two boxes are the same "Prefix /" I'd only expect one box since this doesn't help with my routing understanding.

Reproduce the Consul 1.11.1 service-router configuration in the Routing view and inspect how its two identical "Prefix /" entries are rendered. The issue names no source file or test, so first locate the Routing view entry point and its existing coverage. Done means this configuration presents one understandable routing box without obscuring distinct routes.

Written by the indexing model from the issue text.