Modify TransferBillsRequest constructor to include userRecvStyle

Retain original constructor while adding default for userRecvStyle.

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Author: binarywang

weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/transfer/TransferBillsRequest.java

@@ -93,6 +93,19 @@ public class TransferBillsRequest implements Serializable {
   @SerializedName("user_recv_style")
   private UserRecvStyle userRecvStyle;
 
+  /**
+   * 保留原有全参构造函数，所有参数语义不变，用户收款样式默认不设置。
+   */
+  public TransferBillsRequest(String appid, String outBillNo, String transferSceneId,
+      String openid, String userName, Integer transferAmount, String transferRemark,
+      String notifyUrl, String userRecvPerception,
+      List<TransferSceneReportInfo> transferSceneReportInfos, AuthorizationInfo authorizationInfo,
+      String authorizationId, String outAuthorizationNo, String receiptAuthorizationMode) {
+    this(appid, outBillNo, transferSceneId, openid, userName, transferAmount, transferRemark,
+      notifyUrl, userRecvPerception, transferSceneReportInfos, null, authorizationInfo,
+      authorizationId, outAuthorizationNo, receiptAuthorizationMode);
+  }
+
   /**
    * 自动收款授权信息
    */