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/pages/cart/cart.component.html

@@ -284,7 +284,7 @@
           <button class="close-modal-btn" (click)="closeBankPaymentPopup()" [attr.aria-label]="'cart.close' | translate">
             <app-icon name="x" [size]="20" />
           </button>
-          <iframe [src]="bankPaymentFrameUrl()" class="bank-payment-frame" title="Bank card payment"></iframe>
+          <iframe [src]="bankPaymentFrameUrl()" class="bank-payment-frame" [attr.title]="'common.bankCardPayment' | translate"></iframe>
         </div>
       </div>
     }