SPRINGFIELD — The Illinois General Assembly approved a bill Friday that lowers the burden of proof for essential employees who contracted COVID-19, making it easier for them to receive workers’ compensation benefits.By a 113-2 vote, the House gave its final go-ahead to House Bill 2455. It is the first bill from the legislature’s special session to go to Gov. J.B. Pritzker’s desk.A deal made between business groups and organized labor, the law creates a “rebuttable presumption” that first …