fix(php): toc fallback to raw content when filtered has no headings

When plugins like Thrive Visual Editor transform content for
non-logged users, headings may be removed from the filtered content.
This fix uses raw post_content as fallback when filtered content
has no headings but raw content does.

Also removes temporary debug logging added for diagnosis.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Shared/Application/UseCases/EvaluateComponentVisibility/EvaluateComponentVisibilityUseCase.php

@@ -36,16 +36,9 @@ final class EvaluateComponentVisibilityUseCase
      */
     public function execute(string $componentName): bool
     {
-        // DEBUG: Log for TOC only
-        $debugToc = ($componentName === 'table-of-contents');
-
         // Paso 1: Verificar visibilidad por tipo de pagina
         $visibleByPageType = $this->pageVisibilityUseCase->execute($componentName);
 
-        if ($debugToc) {
-            error_log("EvaluateComponentVisibility [{$componentName}]: visibleByPageType=" . ($visibleByPageType ? "true" : "false"));
-        }
-
         if (!$visibleByPageType) {
             return false;
         }
@@ -53,10 +46,6 @@ final class EvaluateComponentVisibilityUseCase
         // Paso 2: Verificar exclusiones
         $isExcluded = $this->exclusionsUseCase->execute($componentName);
 
-        if ($debugToc) {
-            error_log("EvaluateComponentVisibility [{$componentName}]: isExcluded=" . ($isExcluded ? "true" : "false"));
-        }
-
         // Mostrar si NO esta excluido
         return !$isExcluded;
     }