fix: add missing TimeStep object in CreateInputsModel (erroneously removed)

Refs #106, 839d21d6, cb1e05b0
3 jobs for 50-adjust-transfoparam_gr5h-production-store in 9 minutes and 2 seconds (queued for 51 seconds)
Status Name Job ID Coverage
  Check
passed check_as_cran_patched #167720

00:02:46

passed check_not_cran_patched #167719

00:05:11

 
  Regression
passed regression_patched #167721

00:01:04