Attribute values are translatable in Sylius but no translation information or locale code are in the serialization payload now

[AndreasA]

With this change 51496d6 the locale code for attribute values has been lost. if you want to go with the same behavior as for the attribute itself, you should actually add a translations array and provide all necessary translations there.

As it makes sense to have attributes translated, this should really be fixed, e.g. a color attribute could be red in English but rot in German or even something like lengths with units, e.g. 5,08 cm and 2 inch.

[wachterjohannes]

@AndreasA as we discussed that in a call: there was a change of the payload regarding the attributes. We should document that in the UPGRADE.

Additionally there is a bug with this mentioned commit where we changed the behaviour for translated values. As we also discussed feel free to create a PR for to fix this.