Increased the character limitation

[kushagra21-afk]

Summary

Reason:
The existing 24-character limit is too restrictive for tools generated from workflows and MCP servers. This often results in truncated or unclear names, reducing clarity and usability.

Fix:
Increased the character limit to allow more descriptive names.

Dependencies:
None.

close #22553
close #22656

Screenshots

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Checklist

• 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]

#22656 (comment)

Please see this comment