Horizon Aid fails to install on Drupal CMS 2.2: header and footer Canvas inputs are stored as strings

Problem/Motivation

Since Drupal CMS 2.2.0 (with the new recipe_locale module) and Canvas 1.12.0, installing Horizon Aid fails in the recipe batch with:

TypeError: ComponentInputs::resolveConfigSchemaMapping(): Argument #3 ($actual_inputs) must be of type array, string given

recipe_locale reads every shipped config through its schema, and the header and footer page regions store each component's inputs as a JSON string instead of a mapping. Released 1.0.4 and 1.0.x-dev are both affected.

Steps to reproduce

1. ddev composer create-project drupal/cms, then require drupal/horizonaid.
2. ddev drush site:install drupal_cms_installer installer_site_template_form.add_ons=horizonaid -y
3. The install stops with the TypeError above.

Proposed resolution

Store the 23 inputs values in config/canvas.page_region.vartheme_bs5_horizonaid.header.yml and config/canvas.page_region.vartheme_bs5_horizonaid.footer.yml as YAML mappings, like the content templates already do. Same data, no other change.

Verified: the install completes on stock Drupal CMS 2.2.0.

Remaining tasks

• ✅ File an issue
• ✅ Addition/Change/Update/Fix
• ✅ Testing to ensure no regression
• ➖ Automated unit/functional testing coverage
• ➖ Developer Documentation support
• ➖ User Guide Documentation support
• ➖ UX/UI designer responsibilities
• ➖ Accessibility and Readability
• ❌ Reviewed by a human
• ❌ Code review by maintainers
• ❌ Full testing and approval
• ❌ Credit contributors
• ❌ Review with the product owner
• ✅ Update Release Notes
• ✅ Release

User interface changes

• N/A

API changes

• N/A

Data model changes

• N/A

Release notes snippet

• Fix installing on Drupal CMS 2.2 by storing the header and footer Canvas inputs as mappings.

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