fix(statefulsets): port name not included in headless service (#3077) (…

…#3990)

# Backport

This will backport the following commits from `k8s-28/main` to `k8s-26/main`:
 - [fix(statefulsets): port name not included in headless service (#3077)](#3077)



### Questions ?
Please refer to the [Backport tool documentation](https://github.com/sqren/backport)

src/stateful-set.ts

@@ -154,7 +154,7 @@ export class StatefulSet extends workload.Workload implements IScalable {
 
     const myPorts = container.extractContainerPorts(this);
     const myPortNumbers = myPorts.map(p => p.number);
-    const ports: service.ServicePort[] = myPorts.map(p => ({ port: p.number, targetPort: p.number, protocol: p.protocol }));
+    const ports: service.ServicePort[] = myPorts.map(p => ({ port: p.number, targetPort: p.number, protocol: p.protocol, name: p.name }));
     if (ports.length === 0) {
       throw new Error(`Unable to create a service for the stateful set ${this.name}: StatefulSet ports cannot be determined.`);
     }