use medium level thermal_conductivity in THM/TRM/HT process

ProcessLib/HT/HTFEM.h

ProcessLib/HT/MonolithicHTFEM.h

ProcessLib/HT/StaggeredHTFEM-impl.h

...ssLib/ThermoHydroMechanics/ThermoHydroMechanicsFEM-impl.h

...ThermoRichardsMechanics/ThermoRichardsMechanicsFEM-impl.h

.../ComponentTransport/ThermalDiffusion/TemperatureField.prj

Tests/Data/Parabolic/HT/ConstViscosity/square_5500x5500.prj

...ata/Parabolic/HT/FaultedCube/Ra_795_fault_bcgs_jacobi.prj

...ansportInStationaryFlow/HeatTransportInStationaryFlow.prj

...nthetics/CoupledPressureParabolicTemperatureParabolic.prj

...CoupledPressureParabolicTemperatureParabolicStaggered.prj

...ata/Parabolic/HT/SimpleSynthetics/IsothermalFluidFlow.prj

...olic/HT/SimpleSynthetics/IsothermalFluidFlowStaggered.prj

...ic/HT/SimpleSynthetics/IsothermalFluidFlowWithGravity.prj

...pleSynthetics/IsothermalFluidFlowWithGravityStaggered.prj

...impleSynthetics/PressureDiffusionTemperatureDiffusion.prj

...hetics/PressureDiffusionTemperatureDiffusionStaggered.prj

...impleSynthetics/PressureParabolicTemperatureParabolic.prj

...hetics/PressureParabolicTemperatureParabolicStaggered.prj

.../HT/SimpleSynthetics/calculatesurfaceflux_ht_cube_1e3.prj