3572553 Save Multi-Value Prop Configuration for Code Components

Testing Steps: Multi-Value Props

1. Install Drupal using the standard profile and enable the canvas_dev_mode module:

   ddev drush si --account-pass admin -y && ddev drush en canvas_dev_mode -y && ddev drush cr

2. Open the Canvas editor.
3. Create a code component with a text prop and set its cardinality to limited, then repeat with unlimited.
4. Save the component, reload the page, and confirm the changes persist.
5. Use the "Add to components" button to add the component to the page and verify it renders correctly.
6. Repeat steps 3–5 for every prop type that supports multi-value (e.g. integer, number, image, video, link, date, enum).