fix(overmind): fix statemachine additional state

Author: christianalfoni

packages/node_modules/overmind/src/config/index.ts

@@ -1,4 +1,3 @@
 export { merge } from './merge'
 export { namespaced } from './namespaced'
 export { lazy } from './lazy'
-export { statechart, Statechart } from './statechart'