### What?
Unable to update json fields externally. For example, calling `setValue`
on a json field would not be reflected in the admin panel UI.
### Why?
JSON fields use the monaco editor to manage state internally, so
programmatically updating the value in state does not change the
internal value.
### How?
Set a ref when the user updates the value and then unset the ref after
the change is complete.
Inside the hook that watches `value`, if the value changed and the
change came from the system (i.e. a programmatic change) refresh the
editor by adjusting its key prop. If the change was made by the user,
there is no need to refresh the editor.
Fixes https://github.com/payloadcms/payload/issues/10819
36e152d69d