core: make request in context optional for Applications API

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>

#3482

authentik/core/api/applications.py

@@ -50,6 +50,8 @@ class ApplicationSerializer(ModelSerializer):
 
     def get_launch_url(self, app: Application) -> Optional[str]:
         """Allow formatting of launch URL"""
+        user = None
+        if "request" in self.context:
             user = self.context["request"].user
         return app.get_launch_url(user)