QNetworkRequest::setRawHeader puts header name in lowercase

#include <QNetworkRequest>

int main()
{
    QNetworkRequest request;
    request.setRawHeader( "HEADER1-NAME", "VALUE1" );
    request.setRawHeader( "Header2-Name", "Value2" );
    request.setRawHeader( "header3-name", "value3" );

    for ( const auto &header : request.rawHeaderList() ) {
        qInfo() << header;
    }

    return 0;
}

╰─➤  ./gcc-11-6.8.0-request_headers_setter/request_headers_setter
"header1-name"
"header2-name"
"header3-name"

╰─➤  ./gcc-11-6.7.3-request_headers_setter/request_headers_setter
"HEADER1-NAME"
"Header2-Name"
"header3-name"