Implemented #4369

Signed-off-by: Pagwin <dev@pagwin.xyz>

launcher/ui/pages/instance/ModFolderPage.h

@@ -45,6 +45,8 @@
 class ModFolderPage : public ExternalResourcesPage {
     Q_OBJECT
 
+    friend void HandleNoModLoader(ModFolderPage* self);
+
    public:
     explicit ModFolderPage(BaseInstance* inst, std::shared_ptr<ModFolderModel> model, QWidget* parent = nullptr);
     virtual ~ModFolderPage() = default;