Fix help buttons disabled when on homepage

crates/ui-egui/src/menus.rs

@@ -1778,7 +1778,7 @@ pub fn checked(app: &DesignApp, id: &str, params: &Value) -> Option<bool> {
 /// Enablement for menu display (UI commands need a document unless they're app/window-level).
 pub fn menu_enabled(app: &DesignApp, id: &str) -> bool {
     if ui_label(id).is_some() {
-        return app.session.active().is_some() || id.starts_with("app.") || id.starts_with("window.");
+        return app.session.active().is_some() || id.starts_with("app.") || id.starts_with("window.") || id.starts_with("help.");
     }
     enabled(app, id)
 }