Fix unresponsive "New transfer" button (Windows)

Reproduced on Windows 10 Pro 22H2 19045.4412, not observed on MacOS or Linux.

Steps to reproduce:

1. On a previously installed & configured instance of Nuxeo Drive client, upgrade to version 5.4.0
2. Navigate to the Upload content window via the popup opened from the system tray Drive icon
3. Click on the New transfer button to initiate a Direct Transfer

Expected behavior: direct transfer window opens

Actual behavior: nothing happens after clicking the New transfer button; Drive client may become unresponsive after several clicks and require a force quit

Note: we also observed that deleting and re-adding the existing User account configured on the Drive instance lets the Direct Transfer window open as expected.