feat: The list of input field variables in the Start node panel can be dragged and dropped

[ldq1220]

Summary

#10808
#9628

The ability to drag and drop input variables would be very useful.

Tip

Close issue syntax: Fixes #<issue number> or Resolves #<issue number>, see documentation for more details.

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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

[crazywoola]

Please fix the CI tests, and do not modify the PR template. Fill in the description that can help us understand what you want to achieve.

[ldq1220]

Please fix the CI tests, and do not modify the PR template. Fill in the description that can help us understand what you want to achieve.

Hi @crazywoola .
The CI test indicates that the string-width@4.2.3 version is incompatible when yarn install --frozen-lockfile is run. I updated the yarn.lock file locally and ran yarn install --frozen-lockfile with no problem. But I can't submit yarn.lock directly. So let the authorities take care of it. The PR code I submitted this time has no problem in local deployment.