agent: Use Markdown to render tool input and output content (#28127)

Release Notes:

- agent: Tool call's input and output content are now rendered with
Markdown, which allows them to be selected and copied.

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Co-authored-by: Agus Zubiaga <hi@aguz.me>
288da0f072Danilo Leal committed on 4/4/2025, 9:53:21 PM· committed by GitHubparentb8d05bb
2 files changedLine totals unavailable