By Karen Braun NERVILLE, Illinois, - Speculators entered July with their most bearish ever midyear views on Chicago corn and soybeans, and prices have recently touched the lowest levels since 2020 as supply fears have all but vanished. In the week ended July 2, money managers expanded their net short in CBOT corn futures and options to 336,538 contracts from 277,666 a week earlier, nearing the all-time short of 340,732 contracts set this February. That is according to data published by the U.S. Commodity Futures Trading Commission on Monday afternoon,...