Fixes#13756
The findByID endpoint, by default, expects the data for localized fields
to be an object, values mapped to the locale. This is not the case for
client-side live preview, as we send already-flattened data to the
findByID endpoint.
For localized fields where the value is an object (richText/json/group),
the afterRead hook handler would attempt to flatten the field value,
even though it was already flattened.
## Solution
The solution is to expose a `flattenLocales` arg to the findByID
endpoint (default: true) and pass `flattenLocales: false` from the
client-side live preview request handler.
---
- To see the specific tasks where the Asana app for GitHub is being
used, see below:
- https://app.asana.com/0/0/1211334752795627
b34e5eadf4
