Properly filter the map search results when switching sort types

include/mainwindow.h

@@ -295,6 +295,7 @@ private:
     void initMapSortOrder();
     void setProjectSpecificUIVisibility();
     void loadUserSettings();
+    void applyMapListFilter(QString filterText);
     void restoreWindowState();
     void setTheme(QString);
     bool openRecentProject();