Fixed forced login for user switching

cloud/routes.py

@@ -140,12 +140,10 @@ def _homepage_context() -> dict:
 @blueprint.route('/login')
 def login():
     from flask import request
-    from flask_login import logout_user
 
     if request.args.get('force'):
         log.debug('Forcing logout of user before rendering login page.')
-        logout_user()
-        session.clear()
+        pillar.auth.logout_user()
 
     next_after_login = request.args.get('next')