Qt6 QNetworkRequest ProtocolInvalidOperationError(302)

在Qt6.2.1中使用HTTP GET请求时，出现了错误：QNetworkReply::ProtocolInvalidOperationError，但是用postman调用同一接口就是正常的，用Wireshark查看2次请求的header发现，Qt6使用了HTTP/2：

需要禁用HTTP/2才能正常请求：

mRequest.setAttribute(QNetworkRequest::Http2AllowedAttribute, false);

该属性描述：

Requests only, type: QMetaType::Bool (default: true) Indicates whether the QNetworkAccessManager code is allowed to use HTTP/2 with this request. This applies to SSL requests or 'cleartext' HTTP/2.