fix: full-form internal links follow the {{link:}} target rules (ruling P10)

One PostIdParser for {{link:}} and select_post; post_link_url_<type> needs a
living, readable, non-attachment target of exactly that type.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

src/Integrations/Divi/Pages/WpValueSanitizer.php

@@ -48,4 +48,9 @@ final class WpValueSanitizer implements ValueSanitizer
     {
         return current_user_can('read_post', $id);
     }
+
+    public function linkTargetType(int $id): ?string
+    {
+        return (new WpLinkTargets())->postTypeOf($id);
+    }
 }