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/features/website/user-experience/components/floating-notifications/floating-notifications.component.html

@@ -3,7 +3,7 @@
     @for (note of notifications(); track note.id) {
       <article class="floating-note" [class]="'floating-note floating-note-' + note.type">
         <p>{{ note.message }}</p>
-        <button type="button" (click)="dismiss(note.id)" aria-label="Dismiss">×</button>
+        <button type="button" (click)="dismiss(note.id)" [attr.aria-label]="'common.dismiss' | translate">×</button>
       </article>
     }
   </aside>

src/app/features/website/user-experience/components/floating-notifications/floating-notifications.component.ts

@@ -1,9 +1,11 @@
 import { ChangeDetectionStrategy, Component, inject } from '@angular/core';
 import { UserNotificationService } from '../../services/user-notification.service';
+import { TranslatePipe } from '../../../../../i18n/translate.pipe';
 
 @Component({
   selector: 'app-floating-notifications',
   standalone: true,
+  imports: [TranslatePipe],
   templateUrl: './floating-notifications.component.html',
   styleUrls: ['./floating-notifications.component.scss'],
   changeDetection: ChangeDetectionStrategy.OnPush