A solar-powered electric tricycle ferries passengers in Havana on June 30, 2026. President Donald Trump has tried to strangle Cuba by blocking its oil imports. But six months later, the island is finding ways to endure. (Lisette Poole González/The New York Times) By JACK NICAS For months, President Donald Trump has been predicting that Cuba is about to collapse. “It’s just going to fall,” he told reporters on Jan. 4, a day after taking control of Venezuela’s oil, which had been Cuba’s…