Disable "Check for Updates" and "Download Mods" while the game is running

Signed-off-by: Gingeh <39150378+Gingeh@users.noreply.github.com>

launcher/ui/pages/instance/ModFolderPage.h

@@ -53,6 +53,7 @@ class ModFolderPage : public ExternalResourcesPage {
     virtual QString helpPage() const override { return "Loader-mods"; }
 
     virtual bool shouldDisplay() const override;
+    virtual void runningStateChanged(bool running);
 
    private slots:
     void installMods();