fix: [재고현황] mapStockResponse에 lastTransactionDate 누락 추가

빌드 타입 에러 해결

src/components/material/StockStatus/StockStatusList.tsx

@@ -246,6 +246,7 @@ export function StockStatusList() {
         status: hasStock ? (stock?.status as StockStatusType | null) : null,
         useStatus: (item.is_active === false || item.status === 'inactive') ? 'inactive' : 'active',
         location: hasStock ? ((stock?.location as string) || '-') : '-',
+        lastTransactionDate: hasStock ? (String(stock?.last_transaction_date ?? '') || '') : '',
         hasStock,
       };
     });