KRaft Controller: Possible NPE when we remove topics with any offline partitions in the cluster

void removeTopicEntryForBroker(Uuid topicId, int brokerId) {
    Map<Uuid, int[]> topicMap = isrMembers.get(brokerId);
    if (topicMap != null) {
        if (brokerId == NO_LEADER) {
            offlinePartitionCount.set(offlinePartitionCount.get() - topicMap.get(topicId).length);
        }
        topicMap.remove(topicId);
    }
}