[PYG-416] 🤓 Allow query across direct relation without source (#507)

# Description

**Reviewer**: All code inside `examples/` is generated.

See below

## Bump

- [x] Patch
- [ ] Minor
- [ ] Skip

## Changelog
### Fixed

- [alpha] Pygen now allows you to get the node properties when querying
across a direct relation without source.
