ViewModel for a single property field of a LegalIdentity.
string Key
The key for the field. This is the name of the field in the LegalIdentity model.
string? Value
Either the user‑override (if set), or else the model value.
bool IsReviewable
If the key is reviewable.
ObservableFieldItem(string key, string label, LegalIdentity model, bool isReviewable, string? initialOverride=null)
ctor.