[Bug] server-pdb is broken

[FurqanHabibi]

What are you really trying to do?

Deploy temporal with pdb.

Describe the bug

server-pdb is broken and can't be deployed because it uses . inside range block https://github.com/temporalio/helm-charts/blob/main/charts/temporal/templates/server-pdb.yaml#L10

Instead it should use $.

Minimal Reproduction

Try to deploy temporal with pdb

helm install \
    --repo https://go.temporal.io/helm-charts \
    --set server.frontend.replicaCount=2 \
    --set server.frontend.podDisruptionBudget.minAvailable=1 \
    temporaltest temporal \
    --timeout 15m

Environment/Versions

• OS and processor: Linux
• Temporal Version: 1.25.0
• Kubernetes 1.30

Additional context