chore: temporary fix to get sonnet 3.7 working again (#7140)

Author: xingyaoww

openhands/llm/llm.py

@@ -418,6 +418,8 @@ def init_model_info(self):
                     self.model_info['max_tokens'], int
                 ):
                     self.config.max_output_tokens = self.model_info['max_tokens']
+            if 'claude-3-7-sonnet' in self.config.model:
+                self.config.max_output_tokens = 64000  # litellm set max to 128k, but that requires a header to be set
 
         # Initialize function calling capability
         # Check if model name is in our supported list