iOS: Try a different JIT detection method, thanks Halo-Michael.

Also add an escape route from games list settings without a back button.

See #14240

UI/MainScreen.cpp

@@ -1567,6 +1567,8 @@ void GridSettingsScreen::CreatePopupContents(UI::ViewGroup *parent) {
 		items->Add(new Choice(sy->T("Clear Recent Games List")))->OnClick.Handle(this, &GridSettingsScreen::OnRecentClearClick);
 	}
 
+	items->Add(new Choice(di->T("Back")))->OnClick.Handle<UIScreen>(this, &UIScreen::OnBack);
+
 	scroll->Add(items);
 	parent->Add(scroll);
 }