feat: EK-879: 【AE】管理员增加“Country”属性，根据所选国家限制登录后所显示的奖金、余额等数据（二期）.

backendApi/modules/v1/controllers/ConfigController.php

@@ -845,10 +845,9 @@ class ConfigController extends BaseController {
 
         foreach ($countries as &$country) {
             $currency = $currenciesMap[$country['LOCAL_CURRENCY_ID']];
-            $conversion = $currencyConversion[$currency['ID']];
+            $conversion = $currencyConversion[$currency['ID']] ?? [];
 
             $country['currency'] = $currency['NAME'];
-            $country['currencyCode'] = $currency['CODE'];
             $country['productRate'] = $conversion['PRODUCT_RATE'] ?? 0;
             $country['bonusesRate'] = $conversion['BONUSES_RATE'] ?? 0;
         }