ModelicaTest.Media.TestOnly.WaterIF97_dewEnthalpy uses partial package
ModelicaTest.Media.TestOnly.WaterIF97_dewEnthalpy is defined as:
https://github.com/modelica/ModelicaStandardLibrary/blob/a9c6eabc42058a7b08c5a54f13ac0754ac610b4e/ModelicaTest/Media.mo#L953-L963
However, Modelica.Media.Water.WaterIF97_fixedregion is a partial package, so using it in a simultion model like this is not allowed. Presumably it should just be using one of the non-partial Water mediums instead.
This is not a big deal, as it just involves a test model and not a reusable class in the MSL. Nevertheless, the model is invalid, so it should be fixed.
Will be fixed by #4429, needs to be ported to maint/4.1.0 afterwards
Resolved by #4429 and backported by #4437.