removed temp goja bind workaround as the issue was resolved

plugins/jsvm/binds.go

@@ -465,8 +465,7 @@ func BindCore(vm *goja.Runtime) {
 		return &v
 	})
 	vm.Set("nullObject", func() *types.JSONMap[any] {
-		// cannot be nil because of https://github.com/dop251/goja/issues/822
-		v := types.JSONMap[any]{}
+		var v types.JSONMap[any]
 		return &v
 	})