TechDraw: Fix balloon annotation unlinked after undo-redo (#22805)

* TechDraw: remove then add balloon annotation when changing the SourceView

* Use fixSceneDependencies

src/Mod/TechDraw/Gui/ViewProviderBalloon.cpp

@@ -48,6 +48,7 @@
 #include "QGIViewBalloon.h"
 #include "TaskBalloon.h"
 #include "ViewProviderBalloon.h"
+#include "ViewProviderPage.h"
 
 using namespace TechDrawGui;
 using namespace TechDraw;
@@ -115,12 +116,18 @@ void ViewProviderBalloon::updateData(const App::Property* prop)
     //Balloon handles X, Y updates differently that other QGIView
     //call QGIViewBalloon::updateView
     if (prop == &(getViewObject()->X)  ||
-        prop == &(getViewObject()->Y) ){
+        prop == &(getViewObject()->Y)){
         QGIView* qgiv = getQView();
         if (qgiv) {
             qgiv->updateView(true);
         }
     }
+    if (prop == &(getViewObject()->SourceView)) {
+        // Ensure the QGraphicsItems hierarchy matches the DocumentObject's
+        if (ViewProviderPage* vpp = getViewProviderPage()) {
+            vpp->fixSceneDependencies();
+        }
+    }
 
     //Skip QGIView X, Y processing - do not call ViewProviderDrawingView
     Gui::ViewProviderDocumentObject::updateData(prop);