When using this library with the Drupal sdc_display module, it chokes on YAML structures like:

props:
  type: object
  properties: {}

where it's not able to recognise the value of properties as valid. This is for two reasons:

1. The value gets deserialised as an empty array, which fails strict validation
2. Even if validation with type cast is enabled, it still fails because (bool) $data->properties is false (see JsonFormValidator, line 27)

Steps to reproduce

See issue for Single Directory Components: Display.

Package Versions

• Drupal Core 10.2.6
• Single Directory Components: Display 1.0.0-beta5
• e0ipso/schema-forms 2.5.1
• justinrainbow/json-schema 5.2.13

Proposed resolution

1. Use Constraint::CHECK_MODE_TYPE_CAST in FormGeneratorDrupal, line 52.
2. Remove (bool) $data->properties from JsonFormValidator, line 27.

I'm well aware that this might not be the correct solution and might have implications I can't see right now. Please advise.