Fix: call _fix_tool_message_ordering for all Anthropic models (openai#1936)

Author: habema

src/agents/extensions/models/litellm_model.py

@@ -269,7 +269,7 @@ async def _fetch_response(
  )
 
  # Fix for interleaved thinking bug: reorder messages to ensure tool_use comes before tool_result # noqa: E501
- if preserve_thinking_blocks:
+ if 'anthropic' in self.model.lower() or 'claude' in self.model.lower():
  converted_messages = self._fix_tool_message_ordering(converted_messages)
 
  if system_instructions: