[2.0.5] Compatibility with Drupal 11.2's SDC Variants

I did the quick testing for this as follows.

• Installed latest Drupal core 11.x
• Create a new theme
• Created a simple alert component
• Installed UI pattern layout and layout builder
• Added alert component in article display mode using layout builder twice with different variants
• Both variants are displayed correctly.

There is one error I got when enabling module, I'll create a separate ticket for it

Thank you @sharique, for testing and your feedback.

I tested it a bit as well, and here are my results:
Tested env:
Crupal Core: 11.2-dev
PHP: 8.3.19
UI Patterns: 2.0.3

During the installation of the ui_patterns 2.0.3, I got an error about the compatibility with the Drupal Core implementation (ComponentPluginManager::processDefinitionCategor)

Also, I installed and tested these themes as origins for the components :
ui_suite_bootstrap (5.1.0-beta1)
ui_suite_material (2.0.0-beta1)
ui_suite_daisyui (5.0.0-alpha2)

Each of them was installed and worked without errors.

I can confirm variants like primary, danger, warning, etc., from the abovementioned themes work without issues in Drupal 11.2.

We encountered:

Drupal\Core\Render\Component\Exception\InvalidComponentException: [props.properties.variant.enum] There must be a minimum of 1 items in the array, 0 found in Drupal\Core\Theme\Component\ComponentValidator->validateDefinition() (line 144 of core/lib/Drupal/Core/Theme/Component/ComponentValidator.php).

In vendor/justinrainbow/json-schema/src/JsonSchema/SchemaStorage.php:

    public function resolveRef(string $ref, $resolveStack = [])
    {
        ...
        // get & process the schema
        $refSchema = $this->getSchema($fileName);
        foreach ($jsonPointer->getPropertyPaths() as $path) {

$jsonPointer->getPropertyPaths() is empty and $refSchema = $this->getSchema($fileName); get empty enum.

Removing special $ref for variant fixes the problem. Somehow no problem with other special $ref of UI Patterns 2.