Workaround for thread deletion race condition issue

[Allaoua9]

When deleting an active thread, a race condition occurs where update_thread is called on a thread that was already deleted, causing errors and potentially recreating incomplete thread data.

See details here : #2713

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Summary by cubic

Fixes a race condition when deleting the active thread by navigating away immediately after clearing state. This prevents updates on a deleted thread and avoids recreating partial thread data.

• Bug Fixes
  • In ThreadList.tsx, call navigate('/') right after clear() when deleting the current thread, and remove the later navigate call.

^{Written for commit 24a8b13. Summary will update automatically on new commits.}

[cubic-dev-ai]

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