Apply Full SWATINIT-Like PCOW Rescaling at Restart

We switch to using the applyRestartSwatInit() member function
instead of directly mutating a data member of the EpsInfo structure.
This way we defer the rescaling to a context with a more complete
view of the changes needed to convey the information to all
components involved.

ebos/ecloutputblackoilmodule.hh

@@ -1090,9 +1090,8 @@ public:
         }
 
         if (simulator_.vanguard().eclState().fieldProps().has_double("SWATINIT")) {
-            const auto& oilWaterScaledEpsInfoDrainage
-                = simulator.problem().materialLawManager()->oilWaterScaledEpsInfoDrainage(elemIdx);
-            const_cast<EclEpsScalingPointsInfo<Scalar>&>(oilWaterScaledEpsInfoDrainage).maxPcow = this->ppcw_[elemIdx];
+            simulator.problem().materialLawManager()
+                ->applyRestartSwatInit(elemIdx, this->ppcw_[elemIdx]);
         }
     }