HHH-7821 - Clears the batch collection fetching queue on flush.
Provides a safe guard against NPE in BatchFetchQueue.getCollectionBatch() by checking that CollectionEntry.getLoadedKey() is not null before adding it to the batch.
HHH-7821 - Clear the entire BatchFetchQueue on flush.
Provide a safe guard against NPE in BatchFetchQueue.getCollectionBatch() by checking that CollectionEntry.getLoadedKey() is not null before adding it to the batch.