Allow not, in, is in flow names

Author: schuellc-nvidia

nemoguardrails/actions/llm/utils.py

@@ -535,9 +535,6 @@ def escape_flow_name(name: str) -> str:
         name.replace(" and ", "_and_")
         .replace(" or ", "_or_")
         .replace(" as ", "_as_")
-        .replace(" not ", "_not_")
-        .replace(" is ", "_is_")
-        .replace(" in ", "_in_")
         .replace("(", "")
         .replace(")", "")
         .replace("'", "")