#7953 StimPlan Model: always recompute anchor position and thickness direction. (#8004)

This is to support manually changing the MD directly in the project file.

Fixes #7953.

ApplicationLibCode/ProjectDataModel/StimPlanModel/RimStimPlanModel.h

@@ -153,6 +153,7 @@ public:
     RimWellPath* wellPath() const;
 
     void loadDataAndUpdate();
+    void resetAnchorPositionAndThicknessDirection();
 
     RimModeledWellPath* thicknessDirectionWellPath() const;
     void                setThicknessDirectionWellPath( RimModeledWellPath* thicknessDirectionWellPath );