赵月辉 / fastgpt-migrated

* Match SSE for FastGPT (#5168)

* Match SSE for FastGPT

* Modify the judgment

* Optimize logic for SSE transmission

* Refactor imports

* directly use workflowStreamResponse from props

* improve error handling and streamline onStreamData logic

* Refactor API client configuration

* perf: system tool support sse

* update doc

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Co-authored-by: Zhuangzai fa <143257420+ctrlz526@users.noreply.github.com>