Improve error handling for the Anthropic API

[shige]

Task description

Improve error handling for the Anthropic API in the Giselle application to ensure proper response to various error scenarios as documented in the Anthropic API Error Documentation.

Background

Currently, the Giselle application does not handle Anthropic API errors effectively, leading to potential issues such as uninformative error messages, application crashes, or degraded user experience. Proper error handling is critical to ensure the application can recover gracefully and provide useful feedback to users or developers. This task aims to address these shortcomings by implementing a robust error-handling mechanism that adheres to Anthropic's API documentation and best practices.

TODO (Optional)

• Review the Anthropic API Error Documentation to understand the possible error types and their implications.
• Identify existing gaps in the Giselle application's error-handling logic for API interactions.
• Implement error-handling strategies for common error types (e.g., 4xx client errors, 5xx server errors, rate limits).

Additional notes (Optional)

[toyamarinyon]

There is implementation to handle error for executing node. but there is not for executing flow.

I'll implement it.