Kate Baldwin and Aaron Lazar co-star in “The Bridges of Madison County” at the Axelrod Performing Arts Center in Deal. I understand if you’re immune to the charms of Robert James Waller’s 1992 novella, “The Bridges of Madison County.” And you may not have loved the 1995 film of the same name, co-starring Meryl Streep and Clint Eastwood, that followed. But add Jason Robert Brown’s soaring score to this story — as the 2013 musical version did — and “The Bridges of Madison County” becomes pretty irresistible. Especially when it is performed by a top-notch cast, as is currently being done at the A…