[898][config] hotfix: use correct methot create instead of construct

[grassesi]

Description

PR #905 had a typo in in the backward compatibility mechanism, producing an exception when triggered. This PR contains a hotfix for this bug.

Issue Number

Closes #898

Checklist before asking for review

• I have performed a self-review of my code
• My changes comply with basic sanity checks:
  • I have fixed formatting issues with ./scripts/actions.sh lint
  • I have run unit tests with ./scripts/actions.sh unit-test
  • I have documented my code and I have updated the docstrings.
  • I have added unit tests, if relevant
• I have tried my changes with data and code:
  • I have run the integration tests with ./scripts/actions.sh integration-test
  • (bigger changes) I have run a full training and I have written in the comment the run_id(s): launch-slurm.py --time 60
  • (bigger changes and experiments) I have shared a hegdedoc in the github issue with all the configurations and runs for this experiments
• I have informed and aligned with people impacted by my change:
  • for config changes: the MatterMost channels and/or a design doc
  • for changes of dependencies: the MatterMost software development channel

[clessig]

Looks good but how can one test this? Why didn't this probably occur in every run?

I am again confused by the linting changes but well.

[grassesi]

Looks good but how can one test this? Why didn't this probably occur in every run?

It only triggers when you reload from a run config that was produced before this change, so any fresh run is uneffected