There is no toggle in my admin settings to disable this for the whole org (when on the Team plan). If it was there before they recently removed it.

"Mistral always trained on your data by default except for the enterprise plan" - This is not true, until last week all docs stated that the use of your interactions with Vibe to train Mistral's AI models was off by default on the Team plan. Now that is only still the case on the enterprise plan.