LibGUI+Userland: Make TabWidget::*add_tab() take title using new string

Author: https://github.com/krkk
Commit: 797968c310
Pull-request: https://github.com/SerenityOS/serenity/pull/17800
Reviewed-by: https://github.com/AtkinsSJ
Reviewed-by: https://github.com/awesomekling

Userland/Libraries/LibGUI/SettingsWindow.h

@@ -49,7 +49,7 @@ public:
     template<class T, class... Args>
     ErrorOr<NonnullRefPtr<T>> add_tab(DeprecatedString title, StringView id, Args&&... args)
     {
-        auto tab = TRY(m_tab_widget->try_add_tab<T>(move(title), forward<Args>(args)...));
+        auto tab = TRY(m_tab_widget->try_add_tab<T>(TRY(String::from_deprecated_string(title)), forward<Args>(args)...));
         TRY(m_tabs.try_set(id, tab));
         tab->set_settings_window(*this);
         return tab;