Re-export the Canvas component configs after the card heading-level props

Problem/Motivation

The heading-level work in Vartheme BS5 Educare (#3625237) changes the props schema of three components, which changes their Canvas component version hash. The recipe pins those hashes in active_version, so the shipped config has to be re-exported in lockstep or the recipe installs a pin the theme no longer produces.

Measured on a fresh Drupal CMS + Educare install:

hero-slider-container is a template-only change and its hash does not move, which confirms the hash covers the props schema rather than the Twig.

Separate, pre-existing defect found while measuring this, and not caused by #3625237: the card-icon pin is already stale on 1.0.x today. Reverting the theme to stock 1.0.x (git archive HEAD) and re-reading the computed hashes gives:

• card - recipe pins 91ca18128c643751, stock theme computes 91ca18128c643751: in sync.
• card-pricing - recipe pins f4565661e8e1afba, stock theme computes f4565661e8e1afba: in sync.
• card-icon - recipe pins 62345acf6ed14ba8, stock theme computes f0674bf2770827a4: out of sync before any change of ours.

So an earlier card-icon schema change landed in the theme without the recipe config being re-exported. The re-export below corrects it as a side effect, but the process gap is worth recording.

Steps to reproduce

1. Install Drupal CMS and pick the Educare site template, on stock 1.0.x.
2. Read active_version out of config/canvas.component.sdc.vartheme_bs5_educare.card-icon.yml in the recipe.
3. Read the version the installed site computes for that same component.
4. They differ: 62345acf6ed14ba8 pinned against f0674bf2770827a4 computed.

Proposed resolution

• Re-export canvas.component.sdc.vartheme_bs5_educare.card, .card-icon and .card-pricing from a fresh install carrying the #3625237 theme change.
• The new heading_level prop appears as a list_string / options_select field with default h3. card-pricing's level reads its allowed values live from the schema, so the widened 1-6 range needs no config change beyond the version bump.

Remaining tasks

• ✅ File an issue
• ❌ Merge #3625237 in Vartheme BS5 Educare first - this re-export depends on it
• ❌ 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

• Canvas shows the new Heading level select on Card and Icon Card.

API changes

• N/A

Data model changes

• None. Existing placements keep their stored version and keep rendering.

Release notes snippet

• The shipped Canvas component configs for Card, Icon Card and Pricing Card are re-exported to match the theme, which also corrects a stale Icon Card pin.