api tool support multiple env url

[mboo2005]

Summary

api tool support multiple env url
Fixes #12159

Screenshots

Before	After
server[0].url only	multiple env:

Checklist

Important

Please review the checklist below before submitting your pull request.

• [x ] 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

[mboo2005]

@Yeuoly @crazywoola Code review or any comments when you're free. Thanks

[crazywoola]

Please fix the lint errors.