Add missing references

Author: nyalldawson

python/gui/auto_generated/layout/qgslayoutdesignerinterface.sip.in

@@ -57,7 +57,7 @@ Returns the layout view utilized by the designer.
 Returns the designer's message bar.
 %End
 
-    virtual void selectItems( QList< QgsLayoutItem * > items ) = 0;
+    virtual void selectItems( const QList< QgsLayoutItem * > &items ) = 0;
 %Docstring
 Selects the specified ``items``.
 %End

src/app/layout/qgslayoutdesignerdialog.cpp

@@ -120,7 +120,7 @@ QgsMessageBar *QgsAppLayoutDesignerInterface::messageBar()
   return mDesigner->messageBar();
 }
 
-void QgsAppLayoutDesignerInterface::selectItems( const QList<QgsLayoutItem *> items )
+void QgsAppLayoutDesignerInterface::selectItems( const QList<QgsLayoutItem *> &items )
 {
   mDesigner->selectItems( items );
 }

src/app/layout/qgslayoutdesignerdialog.h

@@ -59,7 +59,7 @@ class QgsAppLayoutDesignerInterface : public QgsLayoutDesignerInterface
     QgsMasterLayoutInterface *masterLayout() override;
     QgsLayoutView *view() override;
     QgsMessageBar *messageBar() override;
-    void selectItems( QList< QgsLayoutItem * > items ) override;
+    void selectItems( const QList< QgsLayoutItem * > &items ) override;
 
   public slots:
 

src/gui/layout/qgslayoutdesignerinterface.h

@@ -76,7 +76,7 @@ class GUI_EXPORT QgsLayoutDesignerInterface: public QObject
     /**
      * Selects the specified \a items.
      */
-    virtual void selectItems( QList< QgsLayoutItem * > items ) = 0;
+    virtual void selectItems( const QList< QgsLayoutItem * > &items ) = 0;
 
   public slots: