Restore app from tray when the login procedure starts

gui.py

@@ -453,6 +453,8 @@ class LoginForm:
     async def ask_login(self) -> str:
         self.update(_("gui", "login", "required"), None)
         self._manager.print(_("gui", "login", "request"))
+        # ensure the window isn't hidden into tray when this runs
+        self._manager.tray.restore()
         # the user needs to press on the login button to open the browser
         self._confirm.clear()
         try: