fix(rubrik): drop tool_call repr from normalize error to avoid leaking args

The TypeError raised in _normalize_tool_calls is caught by apply_guardrail's
broad except, which logs the message plus exc_info. Including repr(tc) in
the message could expose function arguments (potentially sensitive user
data) in the proxy log stream. Type name alone is enough for debugging.

litellm/integrations/rubrik.py

@@ -261,7 +261,7 @@ class RubrikLogger(CustomGuardrail, CustomBatchLogger):
                 )
             else:
                 raise TypeError(
-                    f"Cannot normalize tool_call of type {type(tc).__name__}: {tc!r}"
+                    f"Cannot normalize tool_call of type {type(tc).__name__}"
                 )
         return result