A man votes in Detroit on Tuesday. Dieu-Nalio Chery/ReutersPresident Joe Biden and former President Donald Trump are expected to win handily in their respective contests, but there will be lessons to learn for both. Here’s what to watch for in Michigan: The first ballot test of Biden’s Israel strategy: Biden’s support for Israel – whose war in Gaza has killed roughly 30,000 Palestinians, according to the enclave’s health ministry – has enraged American progressives, many of them Jewish, and Arab Americans. The Michigan city of Dearborn is home to one of the largest Arab American…