vendor sync: navbar keeps the hero-top state across re-renders

ddiff --git a/vendor/openvibe-shared/navbar.js b/vendor/openvibe-shared/navbar.js
iindex f8c13bcd..57cf71ea 100644
---- a/vendor/openvibe-shared/navbar.js
++++ b/vendor/openvibe-shared/navbar.js
@@@ -1208,10 +1208,13 @@
      }
  
      function render() {
++        // A site may put state classes on the bar (Live's transparent hero mode). A re-render must not lose them.
++        let carried = []; try { carried = Array.from((_navEl && _navEl.classList) || []).filter(c => c !== 'openvibe-navbar'); } catch { carried = []; }
          if (_navEl) _navEl.remove();
  
          const nav = document.createElement('nav');
          nav.className = 'openvibe-navbar';
++        carried.forEach(c => { try { nav.classList.add(c); } catch { /* */ } });
          const svc = _config.service;
  
          const brand = resolveBrand();