refactor: make name a prop on app (#17701)

Update app.name to be a property on app.

default_app/main.ts

@@ -98,9 +98,9 @@ function loadApplicationPackage (packagePath: string) {
         app.setVersion(packageJson.version)
       }
       if (packageJson.productName) {
-        app.setName(packageJson.productName)
+        app.name = packageJson.productName
       } else if (packageJson.name) {
-        app.setName(packageJson.name)
+        app.name = packageJson.name
       }
       app._setDefaultAppPaths(packagePath)
     }