fix(storefront): polish catalog

Fix broken markup in the empty-category state: app-catalog-empty-state
self-closed one line early, leaving (secondaryAction)="goToParentCategory()"
as an orphaned line outside any tag — Angular rendered it as literal
text on the page and the handler was never wired to the component.

Add missing :focus-visible states to catalog-empty-state action/chip
buttons, matching the pattern already used by sibling catalog components.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/app/features/website/catalog/components/catalog-empty-state/catalog-empty-state.component.scss

@@ -70,6 +70,12 @@
   transform: translateY(-1px);
 }
 
+.catalog-empty-state__action:focus-visible,
+.catalog-empty-state__chip:focus-visible {
+  outline: 2px solid var(--primary-color);
+  outline-offset: 2px;
+}
+
 .catalog-empty-state__action.secondary {
   background: transparent;
   color: var(--text-secondary);

src/app/features/website/catalog/containers/catalog-container.component.html

@@ -180,7 +180,7 @@
             [message]="'catalog.emptyCategoryMessage' | translate"
             [actionLabel]="'catalog.browseCategories' | translate"
             [secondaryActionLabel]="'catalog.goToParentCategory' | translate"
-            (action)="browseCategories()" />
+            (action)="browseCategories()"
             (secondaryAction)="goToParentCategory()" />
         } @else if (isFilteredEmptyState()) {
           <app-catalog-empty-state