Error Handling Fail Branch will break LLM streaming output

[xunxun1982]

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Dify version

1.0.0

Cloud or Self Hosted

Self Hosted (Docker)

Steps to reproduce

✔️ Expected Behavior

When LLM Error Handling is setting Fail Branch, LLM output is also streaming.

❌ Actual Behavior

When LLM Error Handling is setting Fail Branch, LLM output will be not streaming.