Stop bubbling 401 Thread error to Sentry

[AntoLC]

Bug Report

If the error is correctly managed like it seems to be the case, we should not bring up the information to Sentry:

https://github.com/suitenumerique/docs/blob/f9b043927835e3fb2bf9e3508cbb044d6629daee/src/frontend/apps/impress/src/features/docs/doc-editor/components/comments/DocsThreadStore.tsx#L307-L311