Port congestion — which dramatically worsened in the second half of 2021 — appears to have temporarily peaked, although it’s too soon to tell whether it’s a reprieve before the next runup, a high-level plateau, or the beginning of the end. The number of container ships waiting for berths at the ports of Los Angeles and Long Beach fell to 78 on Tuesday, the lowest tally in three months. That’s down down 23% from 101 ships on Feb. 1 (the average for the month of January was also 101) and down 28% from the all-time high of 109 ships on...