style: apply ruff format to the anthropic stream changes

Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>

litellm/llms/anthropic/experimental_pass_through/adapters/streaming_iterator.py

@@ -1206,7 +1206,9 @@ class AnthropicSSEStream(AsyncIterator[bytes]):
     def __init__(self, anthropic_wrapper: AnthropicStreamWrapper) -> None:
         self._anthropic_wrapper = anthropic_wrapper
         self._byte_stream: Final[AsyncIterator[bytes]] = anthropic_wrapper.async_anthropic_sse_wrapper()
-        self._hidden_params: dict[str, object] = {}  # mutable-ok: the proxy merges provider headers onto _hidden_params in place
+        self._hidden_params: dict[
+            str, object
+        ] = {}  # mutable-ok: the proxy merges provider headers onto _hidden_params in place
 
     @property
     def chunks(self) -> list | None:

litellm/router.py

@@ -637,15 +637,21 @@ class FallbackAwareAnthropicMessagesStream:
 
     @property
     def chunks(self) -> list | None:
-        return cast("list | None", getattr(self._source_iterator, "chunks", None))  # cast-ok: the billing helper itself treats chunks as an opaque getattr
+        return cast(
+            "list | None", getattr(self._source_iterator, "chunks", None)
+        )  # cast-ok: the billing helper itself treats chunks as an opaque getattr
 
     @property
     def messages(self) -> list | None:
-        return cast("list | None", getattr(self._source_iterator, "messages", None))  # cast-ok: messages is a plain list on the inner stream
+        return cast(
+            "list | None", getattr(self._source_iterator, "messages", None)
+        )  # cast-ok: messages is a plain list on the inner stream
 
     @property
     def model(self) -> str | None:
-        return cast("str | None", getattr(self._source_iterator, "model", None))  # cast-ok: model is a str on the inner stream
+        return cast(
+            "str | None", getattr(self._source_iterator, "model", None)
+        )  # cast-ok: model is a str on the inner stream
 
     def adopt_fallback_source(self, fallback_response: object) -> None:
         self._source_iterator = fallback_response