datatransfer: don't encode paths using locale

- as of https://review.jami.net/c/ring-daemon/+/12463 this is not
  required and will break file transfers on windows

Change-Id: I07887c9edfea10d37b9c86a42b257b862d62d903

src/qtwrapper/configurationmanager_wrap.h

@@ -657,8 +657,8 @@ public Q_SLOTS: // METHODS
         dring_info.totalSize = lrc_info.totalSize;
         dring_info.bytesProgress = lrc_info.bytesProgress;
         dring_info.peer = lrc_info.peer.toStdString();
-        dring_info.displayName = lrc_info.displayName.toLocal8Bit().constData();
-        dring_info.path = lrc_info.path.toLocal8Bit().constData();
+        dring_info.displayName = lrc_info.displayName.toStdString();
+        dring_info.path = lrc_info.path.toStdString();
         dring_info.mimetype = lrc_info.mimetype.toStdString();
         return uint32_t(DRing::sendFile(dring_info, id));
     }