The French government won praise last month for making good on its promise to rebuild the fire-hit Notre Dame cathedral in just five years. But authorities are facing a rockier time when it comes to rebuilding cyclone-hit Mayotte — France’s impoverished overseas territory off the coast of East Africa. Lawmakers this week began fractious hearings about how to speed up reconstruction of Mayotte, where Cyclone Chido last month killed dozens, injured thousands and flattened thousands of buildings, especially in shantytowns. On Sunday, another tropical storm triggered flooding in the archipelago, underscoring the fallout of extreme weather events that are becoming