Following the Mubaraz LNG tanker's exit from the Hormuz chokepoint in recent weeks, the first such transit since the conflict began, new ship-tracking data from Bloomberg late Tuesday afternoon show that the first crude supertanker, Idemitsu Maru, is also exiting the critical waterway. Idemitsu Maru, operated by the tanker unit of Japan's Idemitsu Kosan, marks yet another positive signal for Gulf energy flows, but activity in the waterway remains deeply depressed. Two key things we must point out: first, the tanker is through; second, the tanker…