refactor: override / mask static make functions for ApiDownload

Signed-off-by: Rachel Powers <508861+Ryex@users.noreply.github.com>

launcher/net/Upload.h

@@ -51,6 +51,7 @@ namespace Net {
         static Upload::Ptr makeByteArray(QUrl url, QByteArray *output, QByteArray m_post_data);
         auto abort() -> bool override;
         auto canAbort() const -> bool override { return true; };
+        virtual void init() override {};
 
     protected slots:
         void downloadProgress(qint64 bytesReceived, qint64 bytesTotal) override;