fix: correct validation for agent node which is invoked before publishing the app

[kurokobo]

Summary

This is for plugins/beta branch.

This PR corrects moreDataForCheckValid for the Agent node in useChecklistBeforePublish.

The checkValid method for Agent node requires a customized structure of the moreDataForCheckValid object, and this object is correctly created for the Agent node in the useChecklist.
However, this is not implemented in useChecklistBeforePublish.

This PR builds moreDataForCheckValid for Agent node useChecklistBeforePublish as well, ensuring that checkValid is executed correctly at the time of publication.

Closes #12804

Screenshots

Before	After
...	...

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

[AndyMik90]

@crazywoola is this live on https://console-plugin.dify.dev/ ? I'm facing this issue.

[perzeuss]

Same here. Tried with both chatflow and workflow, can't publish it.