It's not necessary to select myself when changing the next node.

[HiChen404]

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1. Is this request related to a challenge you're experiencing?

2. Describe the feature you'd like to see

The self node type item should not show in the picker when changing the next node.

3. How will this feature improve your workflow or experience?

Each time the next node is changed, it clears the next node content.
If 'self' is selected, it also clears the next node content.
The user should avoid making unnecessary node changes.

4. Additional context or comments

Another minor optimization unrelated to this issue:

When the node change, the handleNodeChange method is called, which removes all connectedEdges from the node.

I think the previous line should be kept because the line between the previous node and the next node is deterministic.

I'm a newbie and am learning dify, thanks.

5. Can you help us with this feature?

• I am interested in contributing to this feature.