Delete all SKUs via bulk action in edit mode

Clear the whole SKU list in one operation instead of deleting items one by one.

1. The deletion clears the SKU list in one operation instead of deleting items individually.

   ✓ 2026년 10월 19일에 제품에서 확인됨

2. Confirm the change when prompted; the deletion takes effect only after confirmation.

   ✓ 2026년 10월 19일에 제품에서 확인됨