fix(anthropic): preserve streaming helper methods in instrumentation (#3377)

Author: nirga

packages/opentelemetry-instrumentation-anthropic/opentelemetry/instrumentation/anthropic/__init__.py

@@ -17,8 +17,8 @@
     set_response_attributes,
 )
 from opentelemetry.instrumentation.anthropic.streaming import (
-    abuild_from_streaming_response,
-    build_from_streaming_response,
+    AnthropicAsyncStream,
+    AnthropicStream,
     WrappedAsyncMessageStreamManager,
     WrappedMessageStreamManager,
 )
@@ -558,7 +558,7 @@ def _wrap(
     end_time = time.time()
 
     if is_streaming_response(response):
-        return build_from_streaming_response(
+        return AnthropicStream(
             span,
             response,
             instance._client,
@@ -679,7 +679,7 @@ async def _awrap(
         raise e
 
     if is_streaming_response(response):
-        return abuild_from_streaming_response(
+        return AnthropicAsyncStream(
             span,
             response,
             instance._client,