Also write user_infos if empty

Author: manisandro

src/qwc2_viewer.py

@@ -343,8 +343,7 @@ def qwc2_config(self, identity, params):
 
         config['username'] = display_username or username
         config['tenant'] = self.tenant
-        if user_infos:
-            config['user_infos'] = user_infos
+        config['user_infos'] = user_infos
 
         return jsonify(config)