duplicate finalizers added while enabled revertOndelete attribute on canary

[VinodReddyE]

Describe the bug

We are using fluxv2 and flagger. we have enabled the attribute revertOnDeleton on canary.
flagger is adding a duplicate finalizers configuration.

- finalizer.flagger.app
- finalizer.flagger.app

due to duplicate config fluxv2 is not able to validate the config and client-side validation dry run is failing.

To Reproduce

Generated by manifestor. DO NOT EDIT

apiVersion: flagger.app/v1beta1
kind: Canary
metadata:
name: spring-boot-example-rest-api
spec:

deployment reference

targetRef:
apiVersion: apps/v1
kind: Deployment
name: spring-boot-example-rest-api

the maximum time in seconds for the canary deployment

to make progress before it is rollback (default 600s)

progressDeadlineSeconds: 720

HPA reference (optional)

autoscalerRef:
apiVersion: autoscaling/v2beta2
kind: HorizontalPodAutoscaler
name: spring-boot-example-rest-api-hpa
service:
# service port number
port: 8080
# container port number or name (optional)
targetPort: 8080
# Istio gateways (optional)
gateways:
- platform/ingress-gateway
# Istio virtual service host names (optional)
hosts:
- "*"
match:
- uri:
prefix: "/spring-boot-example-rest-api/"
rewrite:
uri: "/spring-boot-example-rest-api/"

promote the canary without analysing it (default false)

skipAnalysis: false
revertOnDeletion: true
analysis:
interval: 15s
threshold: 10
maxWeight: 100
stepWeight: 100
stepWeightPromotion: 100
match:
- headers:
cookie:
regex: "^([^;]*?; )?(gcprelease=( ?)([^,]?, ?)?spring-boot-example-rest-api@sha256:xxx( ?,?[^,])?)(;[^;])?$"
webhooks:
- name: "events"
type: event
url: xxx
metadata:
image: "xxx"
strategy: manual
- name: "confirm-promotion"
type: confirm-promotion
url: xxx
- name: "rollback"
type: rollback
url: xx

Expected behavior

A clear and concise description of what you expected to happen.

Additional context

• Flagger version: v0.24.0
• Kubernetes version: latest