Choice tags are gone after state reloading

[smwhr]

After saving the state at a choice to JSON and then later reloading the story state from that JSON (in a fresh Story object), there are no tags on the choice objects anymore.

To reproduce

Story

Hello, world!
* [Make a choice # just some tag]
- Great choice!

Code

Result

Expected results

Tag should available on the choice.

More info

Bug was initially detected using inkjs : https://github.com/y-lohse/inkjs/issues/1022