google/adk-python

Describe the bug
The detail error message like below:

litellm.exceptions.BadRequestError: litellm.BadRequestError: AnthropicException - {"type":"error","error":{"type":"invalid_request_error","message":"messages.4: tool_use ids were found without tool_result blocks immediately after: toolu_014qrA41Neqm6NHZTstHQfCm. Each tool_use block must have a corresponding tool_result block in the next message."},"request_id":"req_011CV3JFQ1toRhQLqcqR7KDE"}

To Reproduce

1. Using cloude4.5 mounted by litellm, if there is no response from the tool call in the conversation, the above error will be reported.
2. You can no longer continue the conversation in this session.