feat: #3616871 Release Varbase Project Template 9.2.2

Problem/Motivation

Release Varbase Project Template 9.2.2 — the last step of the Varbase 9.2.1 release train. 16 components (varbase_core/api/media/bootstrap_paragraphs/heroslider_media/carousels/blog/search/seo/auth/total_control/styleguide/email 9.2.2, varbase_editor 9.2.16, varbase_landing 9.2.6, vartheme_bs4 9.2.2) plus Varbase Patches 9.2.99 are already released.

Proposed resolution

• composer.json: version 9.2.1 -> 9.2.2.
• README.md: version badge bump to 9.2.2.
• CHANGELOG.md: 9.2.2 entry covering the 5 commits since 9.2.1 (excluding the plan issue and the prior Back to DEV).
• Regenerated composer.lock + patches.lock.json in a clean-room DDEV composer install, resolving vardot/varbase to the freshly released 9.2.1, vardot/varbase-patches to 9.2.99, and drupal/core to 11.4.5.

Part of #3616871.

AI-Generated: Yes

Checkpoints:

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