fix: guard comp.activity (loader) - render works without activity in headless

plugin.js

@@ -32,7 +32,7 @@
             grid.className = 'movies-grid';
             html.appendChild(grid);
 
-            comp.activity.loader(true);
+            if (comp.activity) comp.activity.loader(true);
 
             fetch(base() + 'movies/catalog.json')
                 .then(function (r) {
@@ -40,7 +40,7 @@
                     return r.json();
                 })
                 .then(function (data) {
-                    comp.activity.loader(false);
+                    if (comp.activity) comp.activity.loader(false);
                     var movies = (data && data.movies) || [];
                     console.log('[mymovies] loaded', movies.length, 'films');
                     renderMovies($(grid), movies);
@@ -48,7 +48,7 @@
                     Lampa.Layer.visible(html);
                 })
                 .catch(function (err) {
-                    comp.activity.loader(false);
+                    if (comp.activity) comp.activity.loader(false);
                     console.error('[mymovies] catalog error', err);
                     grid.innerHTML = '<div class="mymovies-empty">Ошибка загрузки каталога</div>';
                     Lampa.Layer.update(html);