CloudFunction Event trigger failure policy being updated

[kaldvelski]

Checklist

• I did not find a related open issue.
• I did not find a solution in the troubleshooting guide: (https://cloud.google.com/config-connector/docs/troubleshooting)
• If this issue is time-sensitive, I have submitted a corresponding issue with GCP support.

Bug Description

I am creating a CloudFunctionsFunction where I specify a failurePolicy of false for the event trigger.
While the function is successfully created and with a Retry on failure setting of "Function won't be automatically retried on failure", in the logs for the Config connector I'm seeing errors what appear to be trying to set the failurePolicy to true, an operation that fails because it is an immutable field.
My resource is annotated with cnrm.cloud.google.com/reconcile-interval-in-seconds: 0 and cnrm.cloud.google.com/management-conflict-prevention-policy: "none" so I'm surprised it's trying to reconcile the function anyway.
The function works but I would just like my logs not to be cluttered with this error message.

Additional Diagnostic Information

Error message "infeasible update: ({true <nil> EventTrigger.FailurePolicy}) would require recreation"

Kubernetes Cluster Version

v1.30.5-gke.1014001

Config Connector Version

1.111.0

Config Connector Mode

namespaced mode (default)

Log Output

{
  "insertId": "7aebu77prnixmesl",
  "jsonPayload": {
    "msg": "error applying desired state",
    "logger": "cloudfunctionsfunction-controller",
    "error": "infeasible update: ({true <nil> EventTrigger.FailurePolicy}) would require recreation",
    "timestamp": "2024-12-10T14:50:50.274Z",
    "resource": {
      "name": "fed-mig-test-pos-generator-fn",
      "namespace": "olm-rd"
    }
  },
  "resource": {
    "type": "k8s_container",
    "labels": {
      "project_id": "olm-services",
      "namespace_name": "cnrm-system",
      "container_name": "manager",
      "location": "europe-west2",
      "cluster_name": "olmccc",
      "pod_name": "cnrm-controller-manager-mb36apot6scn2vhokn3q-0"
    }
  },
  "timestamp": "2024-12-10T14:50:50.274557092Z",
  "severity": "ERROR",
  "labels": {
    "k8s-pod/cnrm_cloud_google_com/system": "true",
    "compute.googleapis.com/resource_name": "gke-olmccc-pool-1-a653ca53-qkng",
    "k8s-pod/statefulset_kubernetes_io/pod-name": "cnrm-controller-manager-mb36apot6scn2vhokn3q-0",
    "k8s-pod/controller-revision-hash": "cnrm-controller-manager-mb36apot6scn2vhokn3q-6d77475949",
    "k8s-pod/cnrm_cloud_google_com/scoped-namespace": "olm-rd",
    "k8s-pod/cnrm_cloud_google_com/component": "cnrm-controller-manager"
  },
  "logName": "projects/olm-services/logs/stdout",
  "receiveTimestamp": "2024-12-10T14:50:53.933007239Z"
}

### Steps to reproduce the issue

Resource of kind `CloudFunctionsFunction` with `eventTrigger.failurePolicy` of `false`

### YAML snippets

```YAML
apiVersion: cloudfunctions.cnrm.cloud.google.com/v1beta1
kind: CloudFunctionsFunction
metadata: 
  name: my-fn
  annotations:
    cnrm.cloud.google.com/management-conflict-prevention-policy: "none"
    cnrm.cloud.google.com/reconcile-interval-in-seconds: "0"
spec:
  ...
  eventTrigger:
    eventType: providers/cloud.pubsub/eventTypes/topic.publish
    resourceRef:
      external: "projects/proj/topics/me"
    failurePolicy: false
    service: pubsub.googleapis.com