move connection to change project title later in init

this fixes a crash when running QGIS with snapping enabled in ini file

src/app/qgisapp.cpp

@@ -774,8 +774,6 @@ QgisApp::QgisApp( QSplashScreen *splash, bool restorePlugins, bool skipVersionCh
   mMapCanvas->setCanvasColor( QColor( myRed, myGreen, myBlue ) );
   endProfile();
 
-  connect( QgsProject::instance(), &QgsProject::isDirtyChanged, this, [ = ] { setTitleBarText_( *this ); } );
-
   // what type of project to auto-open
   mProjOpen = settings.value( QStringLiteral( "qgis/projOpenAtLaunch" ), 0 ).toInt();
 
@@ -1094,6 +1092,8 @@ QgisApp::QgisApp( QSplashScreen *splash, bool restorePlugins, bool skipVersionCh
 
   QgsMessageLog::logMessage( tr( "QGIS starting…" ), QString(), Qgis::Info );
 
+  connect( QgsProject::instance(), &QgsProject::isDirtyChanged, this, [ = ] { setTitleBarText_( *this ); } );
+
   // set QGIS specific srs validation
   connect( this, &QgisApp::customCrsValidation,
            this, &QgisApp::validateCrs );