fix: issue Multiple Paths Between IF/ELSE Branches

[yihong0618]

Summary

The logic steam answer is wrong we can not make sure which is the right answer.

close #11542 #9560 #10638 #10564,

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Checklist

Important

Please review the checklist below before submitting your pull request.

• This change requires a documentation update, included: Dify Document
• I understand that this PR may be closed in case there was no previous discussion or issues. (This doesn't apply to typos!)
• I've added a test for each change that was introduced, and I tried as much as possible to make a single atomic change.
• I've updated the documentation accordingly.
• I ran dev/reformat(backend) and cd web && npx lint-staged(frontend) to appease the lint gods

[laipz8200]

Hi, I tested this change in a simple chat flow and got a strange answer.

Here is the chat flow I used: Basic Chatflow.txt, you can copy its address and import it from the URL.

[yihong0618]

let me fix it

[yihong0618]

Hi, I tested this change in a simple chat flow and got a strange answer.

Here is the chat flow I used: Basic Chatflow.txt, you can copy its address and import it from the URL.

try to fix it, can you test again

[laipz8200]

I just changed the content in the Answer node, and the problem is still present.

[yihong0618]

not quite the root cause its hard, so draft it for now