`td.nodes.RegionPropsNodes` fails with `td.options.Options(n_workers=1)` context with `SQLGraph`

[yfukai]

Not sure why, but this scenario should be explicitly tested.

[JoOkuma]

Hi @yfukai, are you encountering this error? https://github.com/royerlab/tracksdata/actions/runs/19249631660/job/55031633870?pr=197

[yfukai]

Not really, but let me check if I can solve #190! Maybe I'll also try to migrate to ASV anyway.

[JoOkuma]

ok, thanks a lot!

[yfukai]

Found this already solved (will reopen if I find it again)