- Replaced direct stream handling for chat and channel events in `attachUnifiedChunkedStreaming` with a new `RegisterConversationDeltaListener` parameter for improved encapsulation and flexibility.
- Removed the previous chat and channel event stream parameters, streamlining the function signature and enhancing code clarity.
- Updated the `regenerateMessage` and `_sendMessageInternal` methods to utilize the new listener registration, improving the management of conversation delta events.
- Enhanced error handling for delta listeners, ensuring robust logging of errors during event processing.
- Added `markdown` dependency version `^7.2.1` in `pubspec.yaml`.
- Updated `pubspec.lock` to reflect the direct dependency change.
- Refactored `streaming_helper.dart` to utilize `StreamingResponseController` for better stream management.
- Enhanced `ChatMessagesNotifier` to handle message streams with improved formatting and error handling.
- Updated `StreamingMarkdownWidget` to streamline markdown rendering and support new configurations.
