XB AI: uri-reference type links not getting generated

Page is not getting saved, if ENUM is not set properly. Handling that also here

Tested this manually and it looks like enums and links are working now 👏

tim.plunkett → made their first commit to this issue’s fork.

Merged into 1.x, not into 0.x.

Backported

* **Links:** If the link's format is `uri-reference`, use `{ "uri": value, "options": [] }`; otherwise, use `href: "#"` unless the user explicitly requests a specific URL.

This is not actually correct: that's simply the set of properties used by the link field type, which is picked by these lines in \Drupal\experience_builder\JsonSchemaInterpreter\JsonSchemaStringFormat::computeStorablePropShape():

      // TRICKY: Drupal core does not support RFC3987 aka IRIs, but it's a superset of RFC3986.
      // TRICKY: the `uri` and `iri` prop types will only pass validation with absolute paths, so we
      // instead use the link widget which is more permissive about the URI/IRI content.
      // @see \Drupal\Core\Field\Plugin\Field\FieldType\UriItem
      // @see \Drupal\link\Plugin\Field\FieldType\LinkItem::defaultFieldSettings()
      static::URI_REFERENCE, static::URI, static::IRI_REFERENCE, static::IRI => new StorablePropShape(
        shape: $shape,
        fieldTypeProp: new FieldTypePropExpression('link', 'url'),
        // @see \Drupal\link\Plugin\Field\FieldType\LinkItem::defaultFieldSettings()
        fieldInstanceSettings: [
          // This shape only needs the URI, not a title.
          'title' => 0,
        ],
        fieldWidget: 'link_default',
      ),

There's absolutely no guarantee that this field type is actually used: modules/sites can choose to deviate from XB's default choices for a particular prop shape — see hook_storage_prop_shape_alter(). They could switch to the uri field type or something else altogether.

📌 Allow AI to validate changes before publishing Active will serve as the follow-up issue to solve this more generically.
Thanks!