fix: update tests to match tuple return type for cached init params

tests/test_litellm/llms/openai/test_openai_common_utils.py

@@ -146,12 +146,12 @@ def test_precomputed_init_params_match_inspect_signature():
         _OPENAI_INIT_PARAMS,
     )
 
-    expected_openai = [
+    expected_openai = tuple(
         p for p in inspect.signature(OpenAI.__init__).parameters if p != "self"
-    ]
-    expected_azure = [
+    )
+    expected_azure = tuple(
         p for p in inspect.signature(AzureOpenAI.__init__).parameters if p != "self"
-    ]
+    )
 
     assert _OPENAI_INIT_PARAMS == expected_openai
     assert _AZURE_OPENAI_INIT_PARAMS == expected_azure
@@ -161,6 +161,6 @@ def test_precomputed_init_params_match_inspect_signature():
 def test_get_openai_client_initialization_param_fields(client_type):
     """Verify the method returns the correct pre-computed params for each client type."""
     result = BaseOpenAILLM.get_openai_client_initialization_param_fields(client_type)
-    assert isinstance(result, list)
+    assert isinstance(result, tuple)
     assert len(result) > 0
     assert "self" not in result