Revert "refactor: remove legacy HeroSection component (orphaned code)"

This reverts commit e4c79d3f26.

functions-addon.php

@@ -297,6 +297,9 @@ function roi_render_component(string $componentName): string {
             case 'cta-lets-talk':
                 $renderer = new \ROITheme\Public\CtaLetsTalk\Infrastructure\Ui\CtaLetsTalkRenderer($cssGenerator);
                 break;
+            case 'hero-section':
+                $renderer = new \ROITheme\Public\HeroSection\Infrastructure\Ui\HeroSectionRenderer();
+                break;
             case 'featured-image':
                 $renderer = new \ROITheme\Public\FeaturedImage\Infrastructure\Ui\FeaturedImageRenderer($cssGenerator);
                 break;