use safer .get for all values in cache.users.add_user

Author: bitterpanda63

aikido_zen/context/users.py

@@ -34,9 +34,9 @@ def set_user(user):
     cache = thread_cache.get_cache()
     if cache:
         cache.users.add_user(
-            user_id=validated_user["id"],
-            user_name=validated_user.get("name", ""),
-            user_ip=validated_user["lastIpAddress"],
+            user_id=validated_user.get("id"),
+            user_name=validated_user.get("name"),
+            user_ip=validated_user.get("lastIpAddress"),
             current_time=t.get_unixtime_ms(),
         )