Improve pronoun grounding test to validate cross-pronoun resolution

Changed test case to use different pronouns referring to different people:
- "She said that he prefers..." → "Alice said that Bob prefers..."
This properly tests that multiple pronouns in the same sentence are
correctly resolved to different entities based on context, avoiding
redundant same-name replacements while maintaining test validity.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: abrookins

tests/test_llm_judge_evaluation.py

@@ -263,13 +263,13 @@ async def test_judge_pronoun_grounding_evaluation(self):
 
         # Test case: good pronoun grounding
         context_messages = [
-            "John is a software engineer at Google.",
-            "Sarah works with him on the AI team.",
+            "Alice is the team lead for the project.",
+            "Bob is a junior developer working under her.",
         ]
 
-        original_text = "He mentioned that he prefers Python over JavaScript."
-        good_grounded_text = "John mentioned that he prefers Python over JavaScript."
-        expected_grounding = {"he": "John"}
+        original_text = "She said that he prefers Python over JavaScript."
+        good_grounded_text = "Alice said that Bob prefers Python over JavaScript."
+        expected_grounding = {"she": "Alice", "he": "Bob"}
 
         evaluation = await judge.evaluate_grounding(
             context_messages=context_messages,