Loop termination and loop continuation should be added

[WuTianyi321]

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1. Is this request related to a challenge you're experiencing? Tell me about your story.

I am trying to implement a process where users need to evaluate the output result based on intermediate nodes. If the user is not satisfied, some operations need to be performed before iterating again. I need to include condition checks within the loop, such as terminating the loop when the user is satisfied or continuing the loop if they are not. However, I have found that dify does not seem to support this functionality.

2. Additional context or comments

No response

3. Can you help us with this feature?

• I am interested in contributing to this feature.