[BUG] cluster can't be deleted after scale out

[free6om]

Describe the bug
cluster can't be deleted after scale out

To Reproduce
Steps to reproduce the behavior:

1. kbcli cluster create mysql-qxfvtt --termination-policy=WipeOut --cluster-definition=apecloud-mysql --cluster-version=ac-mysql-8.0.30 --set cpu=100m,memory=0.5Gi,replicas=1,storage=1Gi
2. kbcli cluster hscale mysql-qxfvtt --auto-approve --components mysql --replicas 3
3. kubectl delete cluster mysql-qxfvtt

Expected behavior
cluster was deleted

Additional context
root cause is the Backup object can't be selected by component controller or removed by cluster controller.

[Y-Rookie]

➜  addons git:(support/delete-component-class-definition) kg backup mysql-qxfvtt-mysql-scaling -o yaml
apiVersion: dataprotection.kubeblocks.io/v1alpha1
kind: Backup
metadata:
  creationTimestamp: "2024-04-23T06:36:17Z"
  finalizers:
  - component.kubeblocks.io/finalizer
  - cluster.kubeblocks.io/finalizer
  generation: 1
  labels:
    app.kubernetes.io/instance: mysql-qxfvtt
    app.kubernetes.io/managed-by: kubeblocks
    app.kubernetes.io/name: apecloud-mysql
    apps.kubeblocks.io/component-name: mysql
    apps.kubeblocks.io/managed-by: cluster
    dataprotection.kubeblocks.io/backup-method: xtrabackup
    dataprotection.kubeblocks.io/backup-policy: mysql-qxfvtt-mysql-backup-policy-hscale
  name: mysql-qxfvtt-mysql-scaling
  namespace: default
  ownerReferences:
  - apiVersion: apps.kubeblocks.io/v1alpha1
    blockOwnerDeletion: true
    controller: true
    kind: Component
    name: mysql-qxfvtt-mysql
    uid: 69b492af-ba26-45d9-890c-6ed6d6f9dd4f
  resourceVersion: "73602"
  uid: afa62ff5-d968-4100-93ef-c6458b7c8fc6
spec:
  backupMethod: xtrabackup
  backupPolicyName: mysql-qxfvtt-mysql-backup-policy-hscale
  deletionPolicy: Delete