fixes #0002710: Freecad doesn't show sketch elements added when overconstrained

issue #0002836: Crash in sketcher

src/Mod/Sketcher/Gui/CommandAlterGeometry.cpp

@@ -40,6 +40,7 @@
 
 #include "ViewProviderSketch.h"
 #include "GeometryCreationMode.h"
+#include "CommandConstraints.h"
 
 using namespace std;
 using namespace SketcherGui;
@@ -143,12 +144,8 @@ void CmdSketcherToggleConstruction::activated(int iMsg)
         }
         // finish the transaction and update
         commitCommand();
-        
-        ParameterGrp::handle hGrp = App::GetApplication().GetParameterGroupByPath("User parameter:BaseApp/Preferences/Mod/Sketcher");
-        bool autoRecompute = hGrp->GetBool("AutoRecompute",false);
-        
-        if(autoRecompute) // toggling does not modify the DoF of the solver, however it may affect features depending on the sketch
-            Gui::Command::updateActive();
+
+        tryAutoRecompute();
 
         // clear the selection (convenience)
         getSelection().clearSelection();