Avoid compacting/merging attributes on recursive type definitions when trivia is present

[tboby]

Still WIP

Fixes #3174

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[nojaf]

Could you add a code comment on what this does?

[github-actions]

🤖 This is an automated response from Repo Assist.

Hi @tboby! This PR has been in draft/WIP state since August 2025 — about 7 months without any updates. Are you still working on this fix for #3174?

If you'd like to continue, a rebase against main might be needed as the codebase has evolved considerably (including the v7.0 release and upcoming v8 alpha). If you've moved on, no worries — feel free to close it, or a maintainer can do so.

Thanks for the contribution either way!

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