Catch DatasetGenerationCastError and show details
Will fix https://github.com/huggingface/dataset-viewer/issues/2601 and https://github.com/huggingface/dataset-viewer/issues/2723
Related to https://github.com/huggingface/dataset-viewer/issues/1443

Current number of records with this issue (UnexpectedError):
```
{ _id: { error: 'DatasetGenerationError' }, count: 5504 }
  { _id: { error: 'DatasetGenerationCastError' }, count: 1697 }
```


Catch DatasetGenerationCastError and show details: Will fix https://github.com/huggingface/dataset-viewer/issues/2601 and https://github.com/huggingface/dataset-viewer/issues/2723
Related to https://github.com/huggingface/dataset-viewer/issues/1443

Current number of records with this issue (UnexpectedError):
```
{ _id: { error: 'DatasetGenerationError' }, count: 5504 }
  { _id: { error: 'DatasetGenerationCastError' }, count: 1697 }
```

