fix(storefront): replace hardcoded strings with i18n, neutral empty-state wording

- Route aria-label/alt/title strings (rating, discount, carousel arrows,
  hero slides, dialog close, toast dismiss, QR code, bank payment iframe,
  guest checkout fallback) through the translate pipe/service instead of
  literal English.
- Drop the "Oops!"/"Упс!" apology framing from category/subcategory empty
  states (en/ru/hy) - zero results is not an error.

src/app/shared/ui/dialog/dialog.component.html

@@ -19,7 +19,7 @@
             type="button"
             class="app-dialog-panel__close"
             (click)="requestClose()"
-            aria-label="Close dialog"
+            [attr.aria-label]="'common.closeDialog' | translate"
           >
             ×
           </button>