Merge pull request #27011 from mantidproject/26871_AdsorbtionForISIS_inelastic

Testing/SystemTests/tests/analysis/ISIS_LETReduction.py

Testing/SystemTests/tests/analysis/ISIS_MAPS_DGSReduction.py

Testing/SystemTests/tests/analysis/ISIS_MERLINReduction.py

Testing/SystemTests/tests/analysis/ISIS_MariReduction.py

instrument/LET_Parameters.xml

instrument/LET_Parameters_dr1to12.xml

instrument/LET_Parameters_dr2to12.xml

instrument/LET_Parameters_dr2to9.xml

instrument/LET_Parameters_dr3to10.xml

instrument/LET_Parameters_dr3to11.xml

instrument/MAPS_Parameters.xml

instrument/MAPS_Parameters_2017_06_02.xml

instrument/MARI_Parameters.xml

instrument/MARI_Parameters_19900101_20160911.xml

instrument/MERLIN_Parameters.xml

instrument/MERLIN_Parameters_2017_02.xml

instrument/MERLIN_Parameters_2018_03.xml

instrument/MERLIN_Parameters_after2013_4.xml

scripts/Inelastic/Direct/AbsorptionShapes.py

scripts/Inelastic/Direct/DirectEnergyConversion.py