The word "dissolve" does not have any meaning in French. In version 2021 it is properly called "Fondu" but now the transitions are all over the place and translated incorrectly. For exemple the wipe "Fondu du film" is now called "Film Dissolve" and it can be found under Transition Video / Dissolve with other dissolved transitions that are also translated incorrectly. Please go back to the 2021 where all the transition wipes are together under Video transition Fondu.
There was no known modification to these transitions in the current update, so why on earth did they lose the correct translation in the process of making an update is beyond me.