XdgTopLevelWindow: Update client output in initialize()

It was only updated when the client moved/resized or the outputs
themselves changed.

src/waylandwindow.h

@@ -38,6 +38,7 @@ protected:
     bool belongsToDesktop() const override;
     void doSetActive() override;
     void updateCaption() override;
+    void updateClientOutputs();
     std::unique_ptr<WindowItem> createItem(Scene *scene) override;
 
     void cleanGrouping();
@@ -45,7 +46,6 @@ protected:
     void markAsMapped();
 
 private:
-    void updateClientOutputs();
     void updateIcon();
     void updateResourceName();
 

src/xdgshellwindow.cpp

@@ -1216,6 +1216,7 @@ void XdgToplevelWindow::initialize()
     scheduleConfigure();
     updateColorScheme();
     updateCapabilities();
+    updateClientOutputs();
     setupWindowManagementInterface();
 
     m_isInitialized = true;