Each item in a field option list contains keys like id, name, label, color, icon, description, abbr.
But some option lists only consist of simple key/value pairs. To convert those simple associative arrays
into a full option list, the name should be derived from the id, not the label, because machine names
are expected to be stable, and labels can be translated.

Before: `name` derived from `label` when converting simple associative to an option list
After: `name` derived from `id`.

…option callbacks

Before: Only flat arrays could be returned by a pseudoconstant callback fn.
After: Callbacks can return arrays with id/name/label/abbr.

Previously some API calls relied on a bug which conflated name with label,
that bug has been fixed, causing some test failures. The solution is to
update the option lists with a full multidimensional array with translated labels
and untranslated names.