fix(idm): set correct file and exit with timeseries read error

[mjreno]

Checklist of items for pull request

• Closed issue IDM time series reading shows incorrect input file as the culprit #1892
• Referenced issue or pull request IDM time series reading shows incorrect input file as the culprit #1892
• Formatted new and modified Fortran source files with fprettify
• Removed checklist items not relevant to this pull request

Updated error report:

ERROR REPORT:

  1. Error in list input. Expected numeric value or time-series name, but
     found 'tswrong'.

UNIT ERROR REPORT:

  1. ERROR OCCURRED WHILE READING FILE 'ts01.wel'

With multiple errors:

ERROR REPORT:

  1. Error in list input. Expected numeric value or time-series name, but
     found 'tswrong2'.
  2. Error in list input. Expected numeric value or time-series name, but
     found 'tswrong'.

UNIT ERROR REPORT:

  1. ERROR OCCURRED WHILE READING FILE 'ts01.wel'