infra: add more formatter rules to openai (#23189)

Turns on
https://docs.astral.sh/ruff/settings/#format_docstring-code-format and
https://docs.astral.sh/ruff/settings/#format_skip-magic-trailing-comma

```toml
[tool.ruff.format]
docstring-code-format = true
skip-magic-trailing-comma = true
```

libs/partners/openai/langchain_openai/embeddings/azure.py

@@ -90,10 +90,7 @@ class AzureOpenAIEmbeddings(OpenAIEmbeddings):
             or os.getenv("OPENAI_ORGANIZATION")
         )
         values["openai_proxy"] = get_from_dict_or_env(
-            values,
-            "openai_proxy",
-            "OPENAI_PROXY",
-            default="",
+            values, "openai_proxy", "OPENAI_PROXY", default=""
         )
         values["azure_endpoint"] = values["azure_endpoint"] or os.getenv(
             "AZURE_OPENAI_ENDPOINT"