When you see the names of two such accomplished writer-directors as Rebecca Zlotowski and Robin Campillo credited with the original idea for a film as moribund as Pierre Salvadori’s  The Electric Kiss ( La Vénus électrique ), it’s inevitable to wonder if the material might have worked in other hands. Based on what’s onscreen, that seems unlikely. A French period romantic comedy-drama about a widowed young painter and the charlatan psychic pretending to channel his late wife, this is bland, middlebrow entertainment strictly for domestic consumption, an underwhelming choice to open Cannes . Salvadori was last on the Croisette in 2018 with the far jauntier screwball crime romance  The Trouble With You , one of many reasons to regret the decision of gifted actor Adèle Haenel to quit the film industry. That Directors’ Fortnight entry slightly overloaded on farcical complications but breezed along on the script’s daffy humor, its underlying sweetness and the director’s pleasingly light touch.…