OpenHands

When use openrouter debug with open hands messages and tools , i get whole error output:
`{'message': 'Provider returned error',`
 `'code': 400,`
 `'metadata': {'raw': '{"type":"error","error":{"type":"invalid_request_error","message":"Your API request included an `assistant` message in the final position, which would pre-fill the `assistant` response. When using tools, pre-filling the `assistant` response is not supported."}}',`
  `'provider_name': 'Anthropic'}}`

checked,
work: could use openrouter claude-3-5-haiku-20241022 tools by_change_content_to_str.

i couldn't find way to do it in Open hands.
Coz it take so much time to fix a bug only in openrouter.
Using ANTHROPIC  is a solution. Dont use Openrouter with function calling. :smiling_face_with_tear: