Cracker Barrel’s push to improve its cooking and drop its failed “woke” rebranding have brought back customers and boosted the company’s stock, but a veteran cook told The Post the chain is sliding back to the cost-cutting practices that got it in trouble last year. Earlier this week, the 56-year-old company reported improved financial results that sent its shares soaring by as much as 35%. The southern-style chain lost customers in droves last year when it began reheating food like its popular