The type of reroutes connected to primitive nodes may be lost when the graph is loaded, depending on the configuration order of nodes. Also fixed an error when a primitive widget callback is called and is connected to a reroute without output links.
- Added a check so that reroute nodes won't connect widget inputs with the same type but different configs (e.g. seed and steps).
- The widget property of widget inputs are distributed among every reroute node in the reroute chain, allowing primitives to connect.
