Diagnostics page reports 0 weight mapping as 100

[buckner]

Describe the bug
If I define a mapping to have a weight of 0 it is displayed in the route table of the diagnostics page ([host]/ambassador/v0/diag/) as having a weight of 100%:


I've tested it and the weight is actually 0 despite what it says in the GUI

To Reproduce

Define two mappings:

---
apiVersion: getambassador.io/v2
kind: Mapping
metadata:
  name: nginx-primary
  namespace: buckner
spec:
  prefix: /
  service: nginx-primary.buckner
---
apiVersion: getambassador.io/v2
kind: Mapping
metadata:
  name: nginx-canary
  namespace: buckner
spec:
  prefix: /
  service: nginx-canary.buckner
  weight: 0

Now check the route table in the diagnostic page and it will show both at 100% instead of the 0-weight mapping as 0%
Expected behavior
I expect it to show the correct percentage. If I modify the weight to anything over 0 it works correctly:

Versions (please complete the following information):

• Ambassador: 3.9.1
• Kubernetes environment: Google Kubernetes Engine
• Version: 1.30.5

Additional context
Add any other context about the problem here.