BRUSSELS — The European Commission will present a sweeping emergency energy package on Wednesday, as it attempts to fend off a looming energy crisis. If only it knew what problem it was trying to fix. Since the Iran war broke out on Feb. 28, the EU has swung between wildly divergent policy impulses as the chaos in the Persian Gulf progresses at breakneck pace. It began with anxieties around high prices that were already simmering before the war . That morphed into concerns around Europe’s gas