GRAPEVINE, Texas — They still like Donald Trump and trust that he attacked Iran for good reason, but the conservative activists who met here this week worry about the chaos the war may unleash. If the president ends the conflict soon, if gas prices drop, if no U.S. troops are sent to Iran and if the Iranian people rise up and reclaim their country, the war will have been worth it, many attendees interviewed at the annual Conservative Political Action Conference said. That’s a lot of ifs. It’s also the best-case scenario for a war that just entered its fifth week, they said. But they acknowledged that the conflict has caused pain at home. And they are uncertain about what might unfold. Kyle Sims, 61, a Republican strategist in Texas, said in an interview that he supports Trump’s handling of the war, though he added he has “mixed emotions.” “I know we need to free the Iranian people,” Sims said.…