feat: add a meta(mac) ctrl(windows) key

[crazywoola]

Summary

We introduced the ability to reuse previous by using Key Up and Key Down.
Now we change it to

• Ctrl + Key Up or Meta + Key Up
• Ctrl + Key Down or Meta + Key Down

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