Gui: Adjust transform dragger after undo/redo

When performing undo/redo after tansforming an object it flips back
to its original position but the dragger does not.

This commit set the dragger's placement to the object placement.

Fixes issue 18914

src/Gui/TaskTransform.cpp

@@ -740,13 +740,21 @@ void TaskTransformDialog::openCommand()
     }
 }
 
+void TaskTransformDialog::updateDraggerPlacement()
+{
+    const auto placement = vp->getObjectPlacement();
+    vp->setDraggerPlacement(placement);
+}
+
 void TaskTransformDialog::onUndo()
 {
+    updateDraggerPlacement();
     openCommand();
 }
 
 void TaskTransformDialog::onRedo()
 {
+    updateDraggerPlacement();
     openCommand();
 }
 

src/Gui/TaskTransform.h

@@ -171,6 +171,7 @@ public:
 
 private:
     void openCommand();
+    void updateDraggerPlacement();
 
 private:
     ViewProviderDragger* vp;