Translate tabler icon library update to es, fr, zh

[mintlify-development]

Summary

• Added tabler as a new icon library option in the icons.library documentation for Spanish, French, and Chinese translations
• Mirrors the change from Add tabler to icons.library documentation #4398

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Note

Low Risk
Documentation-only string/type updates with no runtime code or configuration behavior changes.

Overview
Documents tabler as an additional supported icons.library option in the docs.json settings reference for the es, fr, and zh translations.

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