fix: start page always closes on document open (#192)

Remove the closeStart preference check so the start page MDI tab
always closes when a document is opened or created. Re-enable
QListView updates before closing to prevent Qt hang during widget
destruction.

Add hideEvent override as a safety net to re-enable disabled
QListView updates whenever the start page is hidden.

src/Mod/Start/Gui/StartView.cpp

@@ -35,6 +35,7 @@
 #include <QTimer>
 #include <QWidget>
 #include <QStackedWidget>
+#include <QHideEvent>
 #include <QShowEvent>
 
 #include "StartView.h"
@@ -383,12 +384,11 @@ void StartView::postStart(PostStartBehavior behavior)
             Gui::Application::Instance->activateWorkbench(wb.c_str());
         }
     }
-    if (auto closeStart = hGrp->GetBool("closeStart", false)) {
-        for (QWidget* w = this; w != nullptr; w = w->parentWidget()) {
-            if (auto mdiSub = qobject_cast<QMdiSubWindow*>(w)) {
-                mdiSub->close();
-                return;
-            }
+    setListViewUpdatesEnabled(true);
+    for (QWidget* w = this; w != nullptr; w = w->parentWidget()) {
+        if (auto mdiSub = qobject_cast<QMdiSubWindow*>(w)) {
+            mdiSub->close();
+            return;
         }
     }
 }
@@ -478,6 +478,12 @@ void StartView::showEvent(QShowEvent* event)
     Gui::MDIView::showEvent(event);
 }
 
+void StartView::hideEvent(QHideEvent* event)
+{
+    setListViewUpdatesEnabled(true);
+    Gui::MDIView::hideEvent(event);
+}
+
 void StartView::onMdiSubWindowActivated(QMdiSubWindow* subWindow)
 {
     // check if start view is activated subwindow if yes, then enable updates

src/Mod/Start/Gui/StartView.h

@@ -84,6 +84,7 @@ public:
 protected:
     void changeEvent(QEvent* e) override;
     void showEvent(QShowEvent* event) override;
+    void hideEvent(QHideEvent* event) override;
 
     void configureNewFileButtons(QLayout* layout) const;
     static void configureFileCardWidget(QListView* fileCardWidget);