The KafkaTopic.status.topicId keeps the old value when the topic is recreated in Kafka while the reconciliation is paused/disabled, or the operator is not running.

Steps to reproduce:

1. Create a new KT
2. Pause/unmanage the KT
3. Recreate the topic in Kafka
4. Unpause/manage the KT

Expected behavior:

We should set the topicId when the KT is managed and topicId is not set. We should remove the topicId when KT is paused or unmanaged.