fix(timesheets): small typo to_num function

src/modules/timesheets/services/timesheets-query.service.ts

@@ -89,8 +89,8 @@ export class TimesheetsQueryService {
 
         const expenses: ExpenseRow[] = raw_expenses.map(expense => ({
             date: expense.date,
-            amount: typeof (expense.amount as any)?.toNumber === 'function' ?
-                           (expense.amount as any).toNumber() : Number(expense.amount),
+            amount: typeof (expense.amount as any)?.to_num === 'function' ?
+                           (expense.amount as any).to_num() : Number(expense.amount),
             type: String(expense.bank_code?.type ?? '').toUpperCase(),
             is_approved: expense.is_approved ?? true,
         }));