ComponentSourceInterface::submitConfigurationForm and validateConfigurationForm are never called

This AFAIK ties into follow-ups opened for 📌 Add support for Blocks as Components Active that were never followed up on. A quick scan suggests:

• 📌 Define how block settings should be presented in the UI Active
• 📌 [PP-1] Implement client-side validation of block settings Active (see \Drupal\experience_builder\Plugin\ExperienceBuilder\ComponentSource\BlockComponent::fixBooleansUsingConfigSchema())
• etc.