[BUG]the hscale offline ops of etcd cluster is always in running status

[tianyue86]

Describe the env
Kubernetes: v1.31.1-aliyun.1
KubeBlocks: 1.0.0-beta.22
kbcli: 1.0.0-beta.9

To Reproduce
Steps to reproduce the behavior:

1. Create etcd cluster with yaml below

apiVersion: apps.kubeblocks.io/v1
kind: Cluster
metadata:
  name: etcd-moryya
  namespace: default
spec:
  terminationPolicy: WipeOut
  componentSpecs:
    - name: etcd
      componentDef: etcd-3-1.0.0-alpha.0
      tls: false
      replicas: 3
      resources:
        requests:
          cpu: 100m
          memory: 0.5Gi
        limits:
          cpu: 100m
          memory: 0.5Gi
      volumeClaimTemplates:
        - name: data
          spec:
            storageClassName:
            accessModes:
              - ReadWriteOnce
            resources:
              requests:
                storage: 20Gi

2. list-instances shows that the cluster is running well

kbcli cluster list-instances etcd-moryya --namespace default
NAME                 NAMESPACE   CLUSTER       COMPONENT   STATUS    ROLE       ACCESSMODE   AZ                       
etcd-moryya-etcd-0   default     etcd-moryya   etcd        Running   leader     ReadWrite    cn-zhangjiakou-c   
etcd-moryya-etcd-1   default     etcd-moryya   etcd        Running   follower   Readonly     cn-zhangjiakou-c          
etcd-moryya-etcd-2   default     etcd-moryya   etcd        Running   follower   Readonly     cn-zhangjiakou-c  

3. cluster hscale offline instances

apiVersion: operations.kubeblocks.io/v1alpha1
kind: OpsRequest
metadata:
  generateName: etcd-moryya-hscaleoffinstance-
  labels:
    app.kubernetes.io/instance: etcd-moryya
    app.kubernetes.io/managed-by: kubeblocks
  namespace: default
spec:
  type: HorizontalScaling
  clusterName: etcd-moryya
  force: true
  horizontalScaling:
  - componentName: etcd
    scaleIn:
      onlineInstancesToOffline:
      - etcd-moryya-etcd-0 

kubectl create -f test_ops_cluster_etcd-moryya.yaml

4. the hscale offline ops is always in running status

kbcli cluster list-ops etcd-moryya --status all  --namespace default
NAME                                  NAMESPACE   TYPE                CLUSTER       COMPONENT   STATUS    PROGRESS   CREATED-TIME                 
etcd-moryya-hscaleoffinstance-4vr5x   default     HorizontalScaling   etcd-moryya   etcd        Running   0/1        Jan 09,2025

5. describe the opsrequest

Events:
  Type    Reason                    Age                From                    Message
  ----    ------                    ----               ----                    -------
  Normal  WaitForProgressing        13m                ops-request-controller  wait for the controller to process the OpsRequest: etcd-moryya-hscaleoffinstance-4vr5x in Cluster: etcd-moryya
  Normal  ValidateOpsRequestPassed  13m (x2 over 13m)  ops-request-controller  OpsRequest: etcd-moryya-hscaleoffinstance-4vr5x is validated
  Normal  HorizontalScalingStarted  13m (x2 over 13m)  ops-request-controller  Start to horizontal scale replicas in Cluster: etcd-moryya

6. logs

report-cluster-etcd-moryya-2025-01-09-11-40-18.zip

Further testing: the same scenario works well in beta.20 version

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[tianyue86]

This issue is fixed in KB1.0.0-beta.23.