Fix multidimension variable load

[pabloarosado]

Loading variable data was failing on multidimensional indicators on this branch (more details on this issue).

@Marigold I have quickly brute-forced a solution, but I'm not sure if it does the intended effect. Please let me know if it doesn't make sense.

[owidbot]

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+ Dataset garden/ophi/2024-10-28/multidimensional_poverty_index
+ + Table multidimensional_poverty_index
+   + Column intensity
+   + Column headcount_ratio
+   + Column mpi
+   + Column uncensored_headcount_ratio
+   + Column censored_headcount_ratio
+   + Column severe
+   + Column vulnerable


Legend: +New  ~Modified  -Removed  =Identical  Details
Hint: Run this locally with etl diff REMOTE data/ --include yourdataset --verbose --snippet

Automatically updated datasets matching weekly_wildfires|excess_mortality|covid|fluid|flunet|country_profile|garden/ihme_gbd/2019/gbd_risk are not included

Edited: 2024-11-08 13:52:53 UTC
Execution time: 70.24 seconds

[Marigold]

@pabloarosado I have something similar plus some performance improvements in this PR. I'd merge my PR first (since it covers more edge cases found in GHE) and then double check that it works for MPI too.

[pabloarosado]

@pabloarosado I have something similar plus some performance improvements in this PR. I'd merge my PR first (since it covers more edge cases found in GHE) and then double check that it works for MPI too.

Thanks! Feel free to close this PR if you have already a solution for that bug.

[Marigold]

Fixed elsewhere.