RimEclipseResultCase_createSaturationPressurePlots exposes the time step
(the legacy command hardcodes 0) and returns an error when no plots
could be created. It only shows the plot window when a GUI is running;
the legacy code dereferenced RiaGuiApplication::instance()
unconditionally. RicfCreateSaturationPressurePlots resolves the cases
and loops, treating per-case failures as warnings as before.
The hand-written Case.create_saturation_pressure_plots() Python wrapper
is removed since the generated EclipseCase method shadows it.