fix(admin): polish orders

Same gap as products/categories: table select-all and per-row select
checkboxes had no accessible name. Added aria-label (row label
includes order number for context). New adminOrders.selectAllRows/
selectRow keys across en/ru/hy.

Order detail page and order-timeline component reviewed — no
interactive checkboxes or focus-visible gaps found there.

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

src/app/features/admin/orders/pages/admin-orders-list-page.component.html

@@ -60,7 +60,7 @@
       <app-table>
         <thead>
           <tr>
-            <th><input type="checkbox" (change)="facade.toggleAll($any($event.target).checked)" /></th>
+            <th><input type="checkbox" [attr.aria-label]="'adminOrders.selectAllRows' | translate" (change)="facade.toggleAll($any($event.target).checked)" /></th>
             <th>{{ 'adminOrders.orderNumber' | translate }}</th>
             @if (isColumnVisible('customer')) { <th>{{ 'adminOrders.customer' | translate }}</th> }
             @if (isColumnVisible('status')) { <th>{{ 'backoffice.status' | translate }}</th> }
@@ -73,7 +73,7 @@
         <tbody>
           @for (order of facade.orders(); track order.id) {
             <tr>
-              <td><input type="checkbox" [checked]="isSelected(order.id)" (change)="facade.toggleSelection(order.id, $any($event.target).checked)" /></td>
+              <td><input type="checkbox" [checked]="isSelected(order.id)" [attr.aria-label]="('adminOrders.selectRow' | translate) + ': ' + order.orderNumber" (change)="facade.toggleSelection(order.id, $any($event.target).checked)" /></td>
               <td>{{ order.orderNumber }}</td>
               @if (isColumnVisible('customer')) { <td>{{ order.customer.name }}</td> }
               @if (isColumnVisible('status')) { <td><app-badge variant="neutral">{{ ('adminOrders.status.' + order.status) | translate }}</app-badge></td> }