Better missing file traceback from ExtData2G

[mathomp4]

In my trying to test ExtData2G this afternoon, I forgot to update the Chem GC version. In doing so I got this:

forrtl: No such file or directory
forrtl: No such file or directory
forrtl: No such file or directory
forrtl: No such file or directory
forrtl: No such file or directory
forrtl: No such file or directory
forrtl: severe (29): file not found, unit -145, file /gpfsm/dnb44/mathomp4/Experiments/stock-2022Jun06-1day-c24-ExtData2G/scratch/GEOSachem_ExtData.yaml
Image              PC                Routine            Line        Source
GEOSgcm.x          000000000340B6C8  Unknown               Unknown  Unknown
GEOSgcm.x          000000000342FAF2  Unknown               Unknown  Unknown
libMAPL.ExtData2G  00002B5008429717  fy_filestream_mp_          32  FileStream.F90
libMAPL.ExtData2G  00002B500837840F  mapl_extdataconfi          73  ExtDataConfig.F90
libMAPL.ExtData2G  00002B5008378B3C  mapl_extdataconfi          82  ExtDataConfig.F90
libMAPL.ExtData2G  00002B50083B0655  mapl_extdataoldty          51  ExtDataOldTypesCreator.F90
libMAPL.ExtData2G  00002B50083A7B5C  mapl_extdatagridc         353  ExtDataGridCompNG.F90
libesmf.so         00002B4FFB80B9E4  _ZN5ESMCI6FTable1     Unknown  Unknown
libesmf.so         00002B4FFB80F52F  ESMCI_FTableCallE     Unknown  Unknown
libesmf.so         00002B4FFBDB451A  _ZN5ESMCI3VMK5ent     Unknown  Unknown
libesmf.so         00002B4FFBDA1875  _ZN5ESMCI2VM5ente     Unknown  Unknown
...

Now, the error is explicit, but it's from Intel not MAPL. So we should trap this.