At a tiny gelato shop in Helotes, the “OPEN” sign is dimmed. So is business.“The truth is, we may not survive,” said Isaac Butler, co-owner of Congelato.He opened the quaint little shop six years ago. It survived the COVID-19 pandemic. Inflation is killing it.“The cost of production and stocking gelato rose up by about 25% to 30%,” he said. “That’s coinciding with the time, with our sales down 25% to 50%.”Cash is in short supply, so he can only …