Relation widget is not accepting a List as valueField

[prabu-ramaraj]

- Do you want to request a feature or report a bug?
Bug
- What is the current behavior?
Relation widget is not accepting a List field as valueField
- If the current behavior is a bug, please provide the steps to reproduce.
Say for example we have this setup as Relation field.
{label: "Features", name: "features", widget: "relation", collection: "pages", searchFields: ["title"], valueField: "features"}
Here the "features" valuefield is a List type
{label: Features, name: features, widget: list, default: ["super", "very super"]}
- What is the expected behavior?
It should add the values in the list to the current collection

- Please mention your CMS, node.js, and operating system version.

- Please link or paste your config.yml below if applicable.
https://github.com/prabu-ramaraj/one-click-hugo-cms/blob/master/site/static/admin/config.yml

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[d4rekanguok]

This feature is now supported in the latest version of NetlifyCMS! See #3754