trurails: update to getattr (truera#1130)

* fix rag triad and awaitable calls

* remove locals printout in awaitables message

* update __getattr__ in select_context (truera#1119)

---------

Co-authored-by: Piotr Mardziel <piotrm@gmail.com>

trulens_eval/trulens_eval/tru_rails.py

@@ -438,17 +438,13 @@ def select_context(cls, app: Optional[LLMRails] = None) -> Lens:
         return mod_feedback_schema.Select.RecordCalls.kb.search_relevant_chunks.rets[:
                                                                                     ].body
 
-    def __getattr__(self, __name: str) -> Any:
-        # A message for cases where a user calls something that the wrapped
-        # app has but we do not wrap yet.
-
-        if safe_hasattr(self.app, __name):
-            return RuntimeError(
-                f"TruRails has no attribute {__name} but the wrapped app ({type(self.app)}) does. ",
-                f"If you are calling a {type(self.app)} method, retrieve it from that app instead of from `TruRails`. "
-            )
+    def __getattr__(self, name):
+        if name == "__name__":
+            return self.__class__.__name__  # Return the class name of TruRails
+        elif safe_hasattr(self.app, name):
+            return getattr(self.app, name)  # Delegate to the wrapped app if it has the attribute
         else:
-            raise RuntimeError(f"TruRails has no attribute named {__name}.")
+            raise AttributeError(f"TruRails has no attribute named {name}")
 
 
 import trulens_eval  # for App class annotations