initialize Set in one line

Author: vsp05

src/frontend/src/pages/AdminToolsPage/FinanceConfig/AccountManagerTable.tsx

@@ -28,9 +28,7 @@ const AccountManagerTable = () => {
   }
 
   const uniqueIndexCodeNames = (accountCode: AccountCode) => {
-    const uniqueNames = new Set();
-
-    accountCode.indexCodes.forEach((indexCode) => uniqueNames.add(indexCode.name));
+    const uniqueNames = new Set(accountCode.indexCodes.map((indexCode) => indexCode.name));
     return Array.from(uniqueNames).join(', ');
   };
 

src/frontend/src/pages/AdminToolsPage/FinanceConfig/CategoriesTable.tsx

@@ -26,8 +26,7 @@ const CategoriesTable = () => {
   }
 
   const uniqueAccountCodeNames = (category: OtherProductReason) => {
-    const uniqueNames = new Set();
-    category.accountCodes.forEach((accountCode) => uniqueNames.add(accountCode.code));
+    const uniqueNames = new Set(category.accountCodes.map((accountCode) => accountCode.code));
     return Array.from(uniqueNames).join(', ');
   };