fix(helm): Fix wrong port name referenced for ingress NetworkPolicy (#12907)

Author: vholer

production/helm/loki/templates/networkpolicy.yaml

@@ -66,7 +66,7 @@ spec:
       {{- include "loki.selectorLabels" . | nindent 6 }}
   ingress:
     - ports:
-        - port: http
+        - port: http-metrics
           protocol: TCP
   {{- if .Values.networkPolicy.ingress.namespaceSelector }}
       from: