Refactored collection state management to handle API type changes and AI request models. Updated widgets and tests to support nullable HTTP methods and AI request models, and improved response body rendering for AI responses.
Updated response body widgets to handle SSE output as a list of strings instead of a single string. Adjusted view options for SSE-related media types and refactored SSEDisplay to be a stateless widget that accepts a list of SSE events. This improves clarity and consistency in handling and displaying SSE responses.
