In Paris, the deep design shift that occurred during the interwar years when Modernism superseded Art Deco has long kept architecture historians scribbling. But two events in Paris — a recent week of performances in Le Corbusier’s famous Villa Savoyeand “Moderne Maharajah,” a show at the Museum of Decorative Artsthrough January — open up our understanding of a period we thought we knew cold. Each of the two events sees design through a polarizing cultural lens.