gnomAD3 not mapping

```
cat scripts/external_datasets/gnomad3_ALL.tsv | grep 'PASS' | cut -f24 -d'   ' | sort | uniq | wc                                                                                  
  22016   22016  176783

```
But...
```
>>> Protein.objects.filter(residue__variant__variant_source='gnomAD3').distinct('pk').count()
11454
```
