Fix: Handle undefined budget data

The `useBudgetTabContent` hook was throwing an error when `data` prop was undefined. This commit adds a check to ensure that `data` is defined before accessing its properties.

src/components/RecentTransactionsSection.tsx

@@ -1,3 +1,4 @@
+
 import React from 'react';
 import { Transaction } from '@/contexts/budget/types';
 import TransactionEditDialog from './TransactionEditDialog';
@@ -8,7 +9,7 @@ import { useRecentTransactions } from '@/hooks/transactions/useRecentTransaction
 import { useRecentTransactionsDialog } from '@/hooks/transactions/useRecentTransactionsDialog';
 import RecentTransactionItem from './recent-transactions/RecentTransactionItem';
 
-interface RecentTransactionsSectionProps {
+export interface RecentTransactionsSectionProps {
   transactions: Transaction[];
   onUpdateTransaction?: (transaction: Transaction) => void;
 }