✅ join by not found in cube

[Rdataflow]

Describe the bug
merging cubes works pretty fine. but then using that as published chart looks broken atm

To Reproduce
Steps to reproduce the behavior:

1. Go to https://test.visualize.admin.ch/v/psNkz4rQWqvH?dataSource=Test
2. See error

Expected behavior
A chart as shown in edit mode https://test.visualize.admin.ch/create/new?copy=psNkz4rQWqvH

Screenshots or video

Unexpected error
An unexpected error occurred while displaying this chart.
No dimension <joinBy> in cube!

Environment (please complete the following information):

• Visualize environment and version: TEST v4.2.0 (687874d)

[sosiology]

Thanks for the feedback @Rdataflow.
@ptbrowne assigned to you incase it's not yet on your radar

[sosiology]

LGTM- Was able to successfully create a chart with the same parameters on TEST. The error described above did not show up.

test chart: https://test.visualize.admin.ch/en/v/cwiHCcmWVyTi?dataSource=Test