error if Madoc Dropdown default input translated.

[NLW-paulm]

If when creating a content model field of type madoc:dropdown the uiInputDefaultValue is translated.

This then leads to an error on the front end with rendering the drop down when a user selects a previously input annotation. However it does not cause an error on initial load and input of annotation.

You can see examplers on this page by clicking on the first annotation by 'Gwyneth' https://torf.llyfrgell.cymru/en/s/hwiangerddi/manifests/view/60465/62570
and here
https://torf.llyfrgell.cymru/s/ffoto/manifests/view/40886/43731

As the Default Value doesnt show anyway on the front end, we have removed the translation for now so recently added data doenst through the error although without being able to remove old annotations, it means the error shows up a fair bit.