[ST] MigrationST - some KafkaTopics are not deleted correctly after the migration tests

[im-konge]

When we have finalizers enabled in UTO and we are running the MigrationST, from time to time the KafkaTopics cannot be deleted.
The status of such topics is following:

- apiVersion: kafka.strimzi.io/v1beta2
  kind: KafkaTopic
  metadata:
    creationTimestamp: "2024-04-11T14:10:36Z"
    deletionGracePeriodSeconds: 0
    deletionTimestamp: "2024-04-11T14:22:45Z"
    finalizers:
    - strimzi.io/topic-operator
    generation: 2
    labels:
      strimzi.io/cluster: cluster-820b5b0a
      test.case: testMigrationWithDeletionOfCOAndZkDeleteClaimFalse
    name: my-topic-368936459-2026653918-continuous
    namespace: co-namespace
    resourceVersion: "19253"
    uid: 73f22f1f-0b6a-42ed-abf1-9dd67a4e1719
  spec:
    config:
      min.insync.replicas: 2
      retention.ms: 7200000
      segment.bytes: 1073741824
    partitions: 3
    replicas: 3
  status:
    conditions:
    - lastTransitionTime: "2024-04-11T14:27:46.255798715Z"
      message: 'org.apache.kafka.common.errors.TimeoutException: Call(callName=deleteTopics,
        deadlineMs=1712845666154, tries=1, nextAllowedTryMs=1712845666326) timed out
        at 1712845666215 after 1 attempt(s)'
      reason: KafkaError
      status: "False"
      type: Ready
    observedGeneration: 2
    topicId: 38fhq1a8RTWnnnAFvgd1UA
    topicName: my-topic-368936459-2026653918-continuous

For now, the finalizers in UTO were disabled - which fixes the issue now. But we should investigate it more and fix it in the tests.