fix: Use == instead of .__eq__ in rag_corpus_eq\n\nReplaced .__eq__() with == for object comparisons in the rag_corpus_eq helper function to resolve TypeError in Python 3.14.

Author: chalmerlowe

tests/unit/vertex_rag/test_rag_data.py

@@ -424,8 +424,7 @@ def create_transformation_config(
 def rag_corpus_eq(returned_corpus, expected_corpus):
     assert returned_corpus.name == expected_corpus.name
     assert returned_corpus.display_name == expected_corpus.display_name
-    if expected_corpus.backend_config is not None:
-        assert returned_corpus.backend_config == expected_corpus.backend_config
+    assert returned_corpus.backend_config == expected_corpus.backend_config
     assert returned_corpus.vertex_ai_search_config == expected_corpus.vertex_ai_search_config