https://gitlab.com/gitlab-org/gitlab/-/merge_requests/48512 may have
exposed a bug in GitHub LFS import that caused LFS objects to be
downloaded sequentially via `LfsImportService` rather than in
parallel. Instead of returning individual `LfsObject` objects, the
service would import all files and return a Hash indicating success or
failure. This error was caught by an exception handler with the message:

```
undefined method `oid' for [:status, :success]:Array
```

This caught exception prevented the failure from stalling out the
importer process. We may want to reintroduce that behavior.

Relates to https://gitlab.com/gitlab-org/gitlab/-/issues/289669