fix: 修复最大可换货数量判断错误的问题

src/pages/afterService/exchangeApplication/exchangePrSubmit/components/ExchangeForm/effects/useBusinessEffects.ts

@@ -58,7 +58,7 @@ export const useBusinessEffects = (context, actions) => {
       FormPath.transform(name, /\d/, $1 => {
         return `replaceGoodsList.${$1}.extraData`
       }),
-      state => state.value.replacedCount, 
+      state => state.value.remaining, 
     );
 
     setFieldState(

src/pages/afterService/exchangeApplication/exchangePrSubmit/components/ExchangeForm/index.tsx

@@ -251,7 +251,7 @@ const ExchangeForm: React.FC<BillsFormProps> = ({
           data: goodsDetailList.map(item => ({
             ...item, 
             extraData: {
-              replacedCount: item.purchaseCount || 0,     // 已换货数量，这里取 采购数量判断即可
+              remaining: item.purchaseCount || 0,     // 已换货数量，这里取 采购数量判断即可
               id: item.orderRecordId, 
               taskType, 
             }, 
@@ -442,7 +442,7 @@ const ExchangeForm: React.FC<BillsFormProps> = ({
             purchaseAmount: +(item.price * item.purchaseCount).toFixed(2), 
             replaceReason: '', 
             extraData: {
-              replacedCount: item.replaceCount || item.purchaseCount || 0,     // 已换货数量
+              remaining: item.purchaseCount - (item.replaceCount || 0),     // 可换货数量
               id: item.id, 
               taskType: item.processEnum, 
             },