template_enricher can't handle label app.kubernetes.io/name

[zmx]

Describe the bug
K8s Pod create by Argo CD will have label app.kubernetes.io/name
The KubernetesResourceEvent have that label, but string.Template.safe_substitute can't handle dot and slash

To Reproduce

$ kubectl get pod cert-manager-758c6b68ff-v2zwl -n cert-manager -o yaml
apiVersion: v1
kind: Pod
metadata:
  annotations:
    prometheus.io/path: /metrics
    prometheus.io/port: "9402"
    prometheus.io/scrape: "true"
  creationTimestamp: "2023-11-16T22:55:04Z"
  generateName: cert-manager-758c6b68ff-
  labels:
    app: cert-manager
    app.kubernetes.io/component: controller
    app.kubernetes.io/instance: cert-manager
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/name: cert-manager
    app.kubernetes.io/version: v1.11.2
    azure.workload.identity/use: "true"
    helm.sh/chart: cert-manager-v1.11.2

Expected behavior
template could handle ${app.kubernetes.io/name}

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[zmx]

https://kubernetes.io/docs/concepts/overview/working-with-objects/common-labels/#labels
It is Recommended Labels

[zmx]

looks like resolved by #1389

[zmx]

#1492