I was asking myself the same question and then stumbled onto the post below From April 2019. It seems that we will have to use fMRIPrep and tedana separately as they are no longer working to integrate them together.
“The choice to not incorporate tedana denoising into fMRIPrep was a conscious one. Given that fMRIPrep is geared towards robustness – and our lingering concerns as to whether tedana denoising was (yet) able to produce robust results – we decided not to include it for now.”