Files with spaces in the remote path fail to download on Desktop client

Title:

Files with spaces in the remote path fail to download on Desktop client

Body:

If a remote file’s path contains spaces, the file cannot be downloaded via the Desktop client.

Environment:

Server version: 4.18.0-pro

Desktop client version: 0.2.0

Start by reproducing a download of a remote file whose path contains spaces with Desktop client 0.2.0 against Server 4.18.0-pro, then trace the desktop download path to find where the remote path is handled. Done means files with spaces in their remote paths download successfully without breaking paths without spaces.

Written by the indexing model from the issue text.