fix(mini-user): 微信小程序补 Intl 兜底并去掉 toLocaleString

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/mini-user/src/pages/redeem-code/index.tsx

@@ -6,6 +6,7 @@ import PageShell from '../../components/PageShell';
 import RedeemQrCode from '../../components/RedeemQrCode';
 import SubPageHeader from '../../components/SubPageHeader';
 import { request, toast } from '../../lib/api';
+import { formatMoney } from '../../lib/money';
 
 const POLL_INTERVAL_MS = 2500;
 const LAST_REDEEM_RECORD_KEY = 'lastRedeemRecordId';
@@ -26,10 +27,6 @@ type RedeemTokenStatus =
     }
   | { status: 'EXPIRED' };
 
-function formatMoney(amount: number) {
-  return amount.toLocaleString('zh-CN', { minimumFractionDigits: 2, maximumFractionDigits: 2 });
-}
-
 function formatTimer(seconds: number) {
   const mins = Math.floor(seconds / 60);
   const secs = seconds % 60;